refactor(i18n): new hook api (#7273)

# NEW HOOK API

`useI18n`: same as `useAFFiNEI18N`, with additional APIs

```ts
import { useI18n } from '@affine/i18n'

const i18n = useI18n()
i18n['hello world']() -> 你好世界
```

# NEW GLOBAL i18n Instance

`I18n`: use i18n capabilities outside of React

```ts
import { I18n } from '@affine/i18n'

I18n['hello world']() -> 你好世界
```

# NEW TYPES

`I18nKeys` -> all i18n keys

`I18nString` -> An i18n message (key&options)
transfer and store i18n text outside of React
```ts
const msg: I18nString = {
  key: 'helloworld',
  options: {
    arg1: '123'
  }
}

I18n.t(msg) -> 你好世界123
```

before:

```ts
registerCommand('open-page', {
  name: t('command.open-page')
  // ^- translation happens here,
})
```

after:

```ts
registerCommand('open-page', {
  name: { key: 'command.open-page' }
  // ^- store I18nString here, translate when the command render to UI
})
```

packages/frontend/component/src/components/affine-banner/local-demo-tips.tsx

@@ -1,5 +1,5 @@
 import { Button, IconButton } from '@affine/component/ui/button';
-import { useAFFiNEI18N } from '@affine/i18n/hooks';
+import { useI18n } from '@affine/i18n';
 import { CloseIcon } from '@blocksuite/icons/rc';
 import { useCallback } from 'react';
 
@@ -18,7 +18,7 @@ export const LocalDemoTips = ({
   onLogin,
   onEnableCloud,
 }: LocalDemoTipsProps) => {
-  const t = useAFFiNEI18N();
+  const t = useI18n();
   const buttonLabel = isLoggedIn
     ? t['Enable AFFiNE Cloud']()
     : t['Sign in and Enable']();