vim: Add fzf plugin

Symlink the fzf repo into the plugin directory and `packadd` it.
Add fzf.vim (that depends on the base fzf as plugin).

.config/vim/pack/plugins/opt/fzf

@@ -0,0 +1 @@
+../../../../../.local/bin/fzf-repo/

.config/vim/vimrc

@@ -9,6 +9,9 @@ endif
 packadd! onedark.vim
 " Automatically close parentheses, brackets, quotes, etc.
 packadd! delimitMate
+" Fuzzy finder
+packadd! fzf
+packadd! fzf.vim
 " Git information
 packadd! vim-gitgutter
 " Surround text with parentheses, brackets, quotes, tags, etc.