feat: make menu fixed size

lua/plugins/cmp.lua

@@ -76,9 +76,17 @@ function M.config()
 			ghost_text = true,
 		},
 		formatting = {
-			fields = { 'menu', 'abbr', 'kind' },
-			format = function(_, item)
+			fields = { 'abbr', 'kind', 'menu' },
+			format = function(entry, item)
+				local ELLIPSIS_CHAR = '…'
+				local MAX_LABEL_WIDTH = 20
 				item.kind = string.format('%s %s', kind_icons[item.kind], item.kind) -- This concatonates the icons with the name of the item kind
+
+				local label = item.abbr
+				local truncated_label = vim.fn.strcharpart(label, 0, MAX_LABEL_WIDTH)
+				if truncated_label ~= label then
+					item.abbr = truncated_label .. ELLIPSIS_CHAR
+				end
 				return item
 			end,
 		},