feat: google analytics (#15451)

* wip backend

* wip frontend

* build misskey-js

* implement control panel

* fix

* introduce analytics wrapper

* spdx

* Update analytics.ts

* Update common.ts

* wip

* wip

* wip

* wip

* wip

* Update CHANGELOG.md

---------

Co-authored-by: kakkokari-gtyih <67428053+kakkokari-gtyih@users.noreply.github.com>

packages/frontend/src/router/main.ts

@@ -7,6 +7,7 @@ import { EventEmitter } from 'eventemitter3';
 import type { IRouter, Resolved, RouteDef, RouterEvent, RouterFlag } from '@/nirax.js';
 
 import type { App, ShallowRef } from 'vue';
+import { analytics } from '@/analytics.js';
 
 /**
  * {@link Router}による画面遷移を可能とするために{@link mainRouter}をセットアップする。
@@ -29,6 +30,14 @@ export function setupRouter(app: App, routerFactory: ((path: string) => IRouter)
 		window.history.replaceState({ key: ctx.key }, '', ctx.path);
 	});
 
+	mainRouter.addListener('change', ctx => {
+		console.log('mainRouter: change', ctx.path);
+		analytics.page({
+			path: ctx.path,
+			title: ctx.path,
+		});
+	});
+
 	mainRouter.init();
 
 	setMainRouter(mainRouter);