藍モード (#7687)

* wip

* wip

* シンボリックリンクやめた

* install lib dependency

* bring live2d assets from misskey-dev/assets

* refactor

* nanka iroiro

* コミット忘れ

* random motion

* wip

* run git submodule update --init

* コミット忘れ

* refactor

* fix bug

* Update misskey-assets

* lint

* lint

* lint

* 藍モード修正 (#7702)

* lazy load live2d script

* fix typo

* lazy load also widget

* hot link to cubism core

* https://github.com/misskey-dev/misskey/pull/7702/files#r695623821



* fix lint

* remove live2d stuff

* use iframe

* update

* Update gulpfile.ts

* update

* Update .gitattributes

* update

Co-authored-by: tamaina <tamaina@hotmail.co.jp>