feat(keymap): add keymap to format current buffer

lua/config/keys.lua

@@ -141,6 +141,14 @@ local keymaps = {
         keys = '<C-S-tab>',
         cmd  = vim.cmd('BufferPrevious'),
         desc = "Switch to the previous buffer"
+    },
+    {
+        mode = { 'n' },
+        keys = '<S-f>',
+        cmd  = function()
+            vim.lsp.buf.format()
+        end,
+        desc = "Format buffer with current LSP"
     }
 }