stackdriver: add react component for template query editor

public/app/plugins/datasource/stackdriver/module.ts

@@ -2,10 +2,12 @@ import StackdriverDatasource from './datasource';
 import { StackdriverQueryCtrl } from './query_ctrl';
 import { StackdriverConfigCtrl } from './config_ctrl';
 import { StackdriverAnnotationsQueryCtrl } from './annotations_query_ctrl';
+import { StackdriverTemplateQueryCtrl } from './templateQueryCtrl';
 
 export {
   StackdriverDatasource as Datasource,
   StackdriverQueryCtrl as QueryCtrl,
   StackdriverConfigCtrl as ConfigCtrl,
   StackdriverAnnotationsQueryCtrl as AnnotationsQueryCtrl,
+  StackdriverTemplateQueryCtrl as TemplateQueryCtrl,
 };

public/app/plugins/datasource/stackdriver/templateQueryCtrl.tsx

+import React, { PureComponent } from 'react';
+
+interface Props {}
+
+export class StackdriverTemplateQueryCtrl extends PureComponent<Props> {
+  constructor(props) {
+    super(props);
+  }
+
+  componentDidMount() {
+    console.log('componentDidMount');
+  }
+
+  render() {
+    return <h1>Hello Stackdriver Template Query</h1>;
+  }
+}