chore: [Feature]: Keyboard shortcut for quickfix in Telescope (#2385)

Lunarvim has keyboard shortcuts for various LSP searches, that feeds results to quickfix list.

It is useful then to have a quick way to inspect LSP results in quickfix via Telescope.

lua/lvim/core/which-key.lua

@@ -168,6 +168,7 @@ M.config = function()
           "<cmd>Telescope lsp_dynamic_workspace_symbols<cr>",
           "Workspace Symbols",
         },
+        e = { "<cmd>Telescope quickfix<cr>", "Telescope Quickfix" },
       },
       L = {
         name = "+LunarVim",