*: Move third-party plugins into .local/share/

Move all submodules that were under .config/ into .local/share/ (alias
XDG_DATA_HOME). I got convinced that they feel out of place in .config/.

Instead of updating the paths from which they are sourced (e.g.
`TMUX_PLUGIN_MANAGER_PATH` or `packpath`), keep a symlink in the old
location that points to the new one. This has the benefit that
everything related to one program remains mostly accessible from the
same place instead of spreading everything out.

I am still unsure if I really like the new location as I affiliate user
**data** more with something that has to be backed up as it is
non-recreatable. And moving them out of .config/ had the reasoning that
they are not my config files but rather data from the internet that
could be retrieved when deleting. But using XDG_CACHE_HOME seems
unreasonable as well.
We'll see.

Move the fzf-repo from ./local/bin/ to .local/share/.

Update all relative symlinks' (e.g. fzf) targets.

.gitmodules

@@ -8,112 +8,112 @@
 
 # bin
 [submodule "fzf"]
-	path = .local/bin/fzf-repo
+	path = .local/share/fzf-repo
 	url = https://github.com/junegunn/fzf
 
 # git
 [submodule "diff-so-fancy"]
-	path = .config/git/diff-so-fancy
+	path = .local/share/git/plugins/diff-so-fancy
 	url = https://github.com/so-fancy/diff-so-fancy
 [submodule "git-filter-repo"]
-	path = .config/git/git-filter-repo
+	path = .local/share/git/plugins/git-filter-repo
 	url = https://github.com/newren/git-filter-repo
 
 # tmux
 [submodule "tmux-continuum"]
-	path = .config/tmux/plugins/tmux-continuum
+	path = .local/share/tmux/plugins/tmux-continuum
 	url = https://github.com/tmux-plugins/tmux-continuum
 [submodule "tmux-prefix-highlight"]
-	path = .config/tmux/plugins/tmux-prefix-highlight
+	path = .local/share/tmux/plugins/tmux-prefix-highlight
 	url = https://github.com/tmux-plugins/tmux-prefix-highlight
 [submodule "tmux-resurrect"]
-	path = .config/tmux/plugins/tmux-resurrect
+	path = .local/share/tmux/plugins/tmux-resurrect
 	url = https://github.com/tmux-plugins/tmux-resurrect
 [submodule "tmux-sensible"]
-	path = .config/tmux/plugins/tmux-sensible
+	path = .local/share/tmux/plugins/tmux-sensible
 	url = https://github.com/tmux-plugins/tmux-sensible
 [submodule "tmux-yank"]
-	path = .config/tmux/plugins/tmux-yank
+	path = .local/share/tmux/plugins/tmux-yank
 	url = https://github.com/tmux-plugins/tmux-yank
 [submodule "tpm"]
-	path = .config/tmux/plugins/tpm
+	path = .local/share/tmux/plugins/tpm
 	url = https://github.com/tmux-plugins/tpm
 [submodule "vim-tmux-navigator"]
-	path = .config/tmux/plugins/vim-tmux-navigator
+	path = .local/share/tmux/plugins/vim-tmux-navigator
 	url = https://github.com/christoomey/vim-tmux-navigator
 
 # vim
 [submodule "arm-syntax-vim"]
-	path = .config/vim/pack/plugins/opt/arm-syntax-vim
+	path = .local/share/vim/pack/plugins/opt/arm-syntax-vim
 	url = https://github.com/ARM9/arm-syntax-vim
 [submodule "coc.nvim"]
-	path = .config/vim/pack/plugins/opt/coc.nvim
+	path = .local/share/vim/pack/plugins/opt/coc.nvim
 	url = https://github.com/neoclide/coc.nvim
 [submodule "cocci-syntax"]
-	path = .config/vim/pack/plugins/opt/cocci-syntax
+	path = .local/share/vim/pack/plugins/opt/cocci-syntax
 	url = https://github.com/ahf/cocci-syntax
 [submodule "Colorizer"]
-	path = .config/vim/pack/plugins/opt/Colorizer
+	path = .local/share/vim/pack/plugins/opt/Colorizer
 	url = https://github.com/chrisbra/Colorizer
 [submodule "delimitMate"]
-	path = .config/vim/pack/plugins/opt/delimitMate
+	path = .local/share/vim/pack/plugins/opt/delimitMate
 	url = https://github.com/Raimondi/delimitMate
 [submodule "fzf.vim"]
-	path = .config/vim/pack/plugins/opt/fzf.vim
+	path = .local/share/vim/pack/plugins/opt/fzf.vim
 	url = https://github.com/junegunn/fzf.vim
 [submodule "markdown-preview.nvim"]
-	path = .config/vim/pack/plugins/opt/markdown-preview.nvim
+	path = .local/share/vim/pack/plugins/opt/markdown-preview.nvim
 	url = https://github.com/iamcco/markdown-preview.nvim
 [submodule "onedark.vim"]
-	path = .config/vim/pack/plugins/opt/onedark.vim
+	path = .local/share/vim/pack/plugins/opt/onedark.vim
 	url = https://github.com/joshdick/onedark.vim
 [submodule "vimtex"]
-	path = .config/vim/pack/plugins/opt/vimtex
+	path = .local/share/vim/pack/plugins/opt/vimtex
 	url = https://github.com/lervag/vimtex
 [submodule "vim-fugitive"]
-	path = .config/vim/pack/plugins/opt/vim-fugitive
+	path = .local/share/vim/pack/plugins/opt/vim-fugitive
 	url = https://github.com/tpope/vim-fugitive
 [submodule "vim-gitgutter"]
-	path = .config/vim/pack/plugins/opt/vim-gitgutter
+	path = .local/share/vim/pack/plugins/opt/vim-gitgutter
 	url = https://github.com/airblade/vim-gitgutter
 [submodule "vim-gutentags"]
-	path = .config/vim/pack/plugins/opt/vim-gutentags
+	path = .local/share/vim/pack/plugins/opt/vim-gutentags
 	url = https://github.com/ludovicchabant/vim-gutentags
 [submodule "vim-lastplace"]
-	path = .config/vim/pack/plugins/opt/vim-lastplace
+	path = .local/share/vim/pack/plugins/opt/vim-lastplace
 	url = https://github.com/farmergreg/vim-lastplace
 [submodule "vim-obsession"]
-	path = .config/vim/pack/plugins/opt/vim-obsession
+	path = .local/share/vim/pack/plugins/opt/vim-obsession
 	url = https://github.com/tpope/vim-obsession
 [submodule "vim-sort-folds"]
-	path = .config/vim/pack/plugins/opt/vim-sort-folds
+	path = .local/share/vim/pack/plugins/opt/vim-sort-folds
 	url = https://github.com/obreitwi/vim-sort-folds
 [submodule "vim-surround"]
-	path = .config/vim/pack/plugins/opt/vim-surround
+	path = .local/share/vim/pack/plugins/opt/vim-surround
 	url = https://github.com/tpope/vim-surround
 [submodule "vim-syntax-extra"]
-	path = .config/vim/pack/plugins/opt/vim-syntax-extra
+	path = .local/share/vim/pack/plugins/opt/vim-syntax-extra
 	url = https://github.com/justinmk/vim-syntax-extra
 [submodule "vim-textobj-comment"]
-	path = .config/vim/pack/plugins/opt/vim-textobj-comment
+	path = .local/share/vim/pack/plugins/opt/vim-textobj-comment
 	url = https://github.com/glts/vim-textobj-comment
 [submodule "vim-textobj-user"]
-	path = .config/vim/pack/plugins/opt/vim-textobj-user
+	path = .local/share/vim/pack/plugins/opt/vim-textobj-user
 	url = https://github.com/kana/vim-textobj-user
 
 # zsh
 [submodule "fzf-tab"]
-	path = .config/zsh/plugins/fzf-tab
+	path = .local/share/zsh/plugins/fzf-tab
 	url = https://github.com/Aloxaf/fzf-tab
 [submodule "powerlevel10k"]
-	path = .config/zsh/plugins/powerlevel10k
+	path = .local/share/zsh/plugins/powerlevel10k
 	url = https://github.com/romkatv/powerlevel10k
 [submodule "stderred"]
-	path = .config/zsh/plugins/stderred
+	path = .local/share/zsh/plugins/stderred
 	url = https://github.com/sickill/stderred
 [submodule "zsh-autosuggestions"]
-	path = .config/zsh/plugins/zsh-autosuggestions
+	path = .local/share/zsh/plugins/zsh-autosuggestions
 	url = https://github.com/druckdev/zsh-autosuggestions
 [submodule "zsh-syntax-highlighting"]
-	path = .config/zsh/plugins/zsh-syntax-highlighting
+	path = .local/share/zsh/plugins/zsh-syntax-highlighting
 	url = https://github.com/zsh-users/zsh-syntax-highlighting