Support User-Agent Client Hints

[SYUNG]

navigator.useragent information will be freezed.

Could you will support client hints ?

refer to,

• https://web.dev/i18n/en/user-agent-client-hints/
• https://medium.com/naver-fe-platform/prepare-for-client-hints-freezing-user-agent-9c0ea1ddd02c

[Shinji Yamada]

@sihyungkim

Yes, please check the following PR if you have time.

#114