Add/Show/Delete Emojis on Notes (#181)

This MR adds the ability to view, add, and delete emojis from notes and comments.

This action can be performed by default with the `Ea` (emoji add) keybinding, and the `Ed` (emoji delete) keybinding. Only emojis added by the current user are eligible for deletion. The MR also implements a popup functionality which shows the user who added emojis on hover.

Implements #179

lua/gitlab/actions/summary.lua

@@ -245,7 +245,6 @@ M.color_labels = function(bufnr)
   for i, v in ipairs(state.settings.info.fields) do
     if v == "labels" then
       local line_content = u.get_line_content(bufnr, i)
-      vim.print(line_content)
       for j, label in ipairs(state.LABELS) do
         local start_idx, end_idx = line_content:find(label.Name)
         if start_idx ~= nil and end_idx ~= nil then