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/backend/src/server/api/endpoints/admin/meta.ts

@@ -73,6 +73,10 @@ export const meta = {
 				type: 'boolean',
 				optional: false, nullable: false,
 			},
+			googleAnalyticsMeasurementId: {
+				type: 'string',
+				optional: false, nullable: true,
+			},
 			swPublickey: {
 				type: 'string',
 				optional: false, nullable: true,
@@ -572,6 +576,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				enableTurnstile: instance.enableTurnstile,
 				turnstileSiteKey: instance.turnstileSiteKey,
 				enableTestcaptcha: instance.enableTestcaptcha,
+				googleAnalyticsMeasurementId: instance.googleAnalyticsMeasurementId,
 				swPublickey: instance.swPublicKey,
 				themeColor: instance.themeColor,
 				mascotImageUrl: instance.mascotImageUrl,