feat(language/go): use gofumpt in gopls formatting

settings.json

@@ -379,6 +379,7 @@
   ],
   "go.useLanguageServer": true,
   "gopls": {
+    "formatting.gofumpt": true,
     "ui.diagnostic.analyses": {
       "shadow": true
     },
@@ -808,5 +809,11 @@
       },
       "workbench.action.focusActiveEditorGroup"
     ]
+  },
+  "go.disableConcurrentTests": true,
+  "go.editorContextMenuCommands": {
+    "testFile": true,
+    "testPackage": true,
+    "fillStruct": true
   }
 }