vim: Move ftplugins into after/

All of these are meant as additions and should not override vims default
ftplugins.

.config/vim/after/ftplugin/vim.vim

@@ -0,0 +1,6 @@
+" Source config upon saving vim file.
+" Group to avoid "exponential" reloading. See:
+" https://stackoverflow.com/questions/2400264/is-it-possible-to-apply-vim-configurations-without-restarting
+augroup vimrc_reload
+	autocmd! BufWritePost * source $MYVIMRC | echom "Reloaded" | redraw
+augroup END