feat(eslint): setup husky and lint-staged

Feature/sidebar style

* fix: install husky when dev only

Bumps [terser](https://github.com/terser/terser) from 4.8.0 to 4.8.1.
- [Release notes](https://github.com/terser/terser/releases)
- [Changelog](https://github.com/terser/terser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/terser/terser/commits)

---
updated-dependencies:
- dependency-name: terser
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

feat: 优化选区逻辑，这次提交先做了加粗和斜体 Tencent#280 
feat: 重构工具栏机制，支持多个独立菜单自由组合的机制

1、增加选区控制逻辑（目前支持了加粗、斜体、代码块，剩余的继续完善）
2、新增了独立菜单自由组合的能力
3、新增了菜单异步回调逻辑（如上传视频、选择颜色、通过棋盘插入表格等）
4、继续支持旧的二级菜单逻辑
5、新增菜单统一管理机制
6、初步改造了下快捷键机制（后续继续优化）

* fix: Cannot read properties of undefined (reading 'line-table') Tencent#301

* fix: Cannot read properties of undefined (reading 'line-table') Tencent#301

…t#303 (Tencent#304)

* fix: Cannot read properties of undefined (reading 'createBtn') Tencent#303

…erser-4.8.1

build(deps): bump terser from 4.8.0 to 4.8.1

* chore(build): ignore circular dependency
* refactor(bubble): refactor bubble toolbar

- use flexbox instead of hard-code positions
- split bubble toolbar styles into individual file
- simply implemented locale module for i18n

* feat(i18n): move utils/locale to locales

…o Tencent-main-0.8.1