feat(nvim): add descriptions to core mappings

.config/nvim/lua/core/mappings.lua

@@ -35,7 +35,7 @@ M.setup = function()
         else
             vim.diagnostic.disable()
         end
-    end)
+    end, { desc = 'Toggle Diagnostics' })
 
     -- Toggle showing command bar
     vim.keymap.set('n', '<leader>cl', function()
@@ -45,12 +45,12 @@ M.setup = function()
         else
             vim.opt.cmdheight = 1
         end
-    end)
+    end, { desc = 'Toggle Cmdline' })
 
     -- Toggle relativenumber
     vim.keymap.set('n', '<leader>sn', function()
         vim.opt.relativenumber = not vim.opt.relativenumber:get()
-    end)
+    end, { desc = 'Toggle Relativenumber' })
 end
 
 return M