Nvim: Configure plugins in after directory

Switch from fzf to telescope and filesystem to defx

.config/nvim/after/plugin/airline.rc.vim

@@ -0,0 +1,4 @@
+let g:airline_theme = 'minimalist'
+let g:airline_powerline_fonts = 1
+let g:airline_stl_path_style = 'short'
+let g:airline_highlighting_cache = 1