nvim: Add quickui for quickfix preview

Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>

nvim/.config/nvim/init.vim

@@ -76,6 +76,7 @@ Plug 'stefandtw/quickfix-reflector.vim'
 Plug 'romainl/vim-qlist'
 Plug 'mhinz/vim-grepper'
 Plug 'milkypostman/vim-togglelist'
+Plug 'skywind3000/vim-quickui'
 " Text Object plugins
 Plug 'kana/vim-textobj-user'
 Plug 'danidiaz/vim-textobj-do-block'
@@ -402,6 +403,12 @@ command! -bang -nargs=* GGrep
       \   fzf#vim#with_preview({'dir': systemlist('git rev-parse --show-toplevel')[0]}), <bang>0)
 
 " --------------------------- Autocmd groups ---------------------------------
+
+augroup QuickfixPreview
+  au!
+  au FileType qf noremap <silent><buffer> p :call quickui#tools#preview_quickfix()<CR>
+augroup END
+
 augroup vimplug_maps
   au!
   au FileType vim nmap pg :PlugUpgrade<CR>