feat(client): 翻訳をIndexedDBに保存・プッシュ通知を翻訳 (#6396)

* wip

* tabun ok

* better msg

* oops

* fix lint

* Update gulpfile.ts

Co-authored-by: Acid Chicken (硫酸鶏) <root@acid-chicken.com>

* Update src/client/scripts/set-i18n-contexts.ts

Co-authored-by: Acid Chicken (硫酸鶏) <root@acid-chicken.com>

* refactor

Co-authored-by: acid-chicken <root@acid-chicken.com>

* ✨

* wip

* fix lint

* たぶんおk

* fix flush

* Translate Notification

* remove console.log

* fix

* add notifications

* remove san

* wip

* ok

* ✌️

* Update src/prelude/array.ts

Co-authored-by: Acid Chicken (硫酸鶏) <root@acid-chicken.com>

* wip

* i18n refactor

* Update init.ts

* ✌️

Co-authored-by: Acid Chicken (硫酸鶏) <root@acid-chicken.com>
Co-authored-by: syuilo <syuilotan@yahoo.co.jp>

package.json

@@ -125,6 +125,7 @@
 		"css-loader": "3.5.3",
 		"cssnano": "4.1.10",
 		"dateformat": "3.0.3",
+		"deep-entries": "3.1.0",
 		"diskusage": "1.1.3",
 		"double-ended-queue": "2.1.0-0",
 		"escape-regexp": "0.0.1",
@@ -151,6 +152,7 @@
 		"http-proxy-agent": "4.0.1",
 		"http-signature": "1.3.4",
 		"https-proxy-agent": "5.0.0",
+		"idb-keyval": "3.2.0",
 		"insert-text-at-cursor": "0.3.0",
 		"is-root": "2.1.0",
 		"is-svg": "4.2.1",