add retrieved definition message

Author: prabirshrestha

autoload/lsp/ui/vim.vim

@@ -337,6 +337,7 @@ function! s:handle_location(ctx, server, type, data) abort "ctx = {counter, list
                 let l:buffer = bufnr(l:loc['filename'])
                 let l:cmd = l:buffer !=# -1 ? 'b ' . l:buffer : 'edit ' . l:loc['filename']
                 execute l:cmd . ' | call cursor('.l:loc['lnum'].','.l:loc['col'].')'
+                echo 'Retrieved ' . a:type
                 redraw
             else
                 call setqflist(a:ctx['list'])