feat: add reactive window.scrollTo watcher to useWindowScroll

[Solant]

Description

Add watcher with window.scrollTo callback for exported x and y refs, so anyone can make whole page scroll with already exported refs

Additional context

Currently, exported x, and y are simple writable refs, so I can write to them without any warning and with no side effect. It makes sense to either make them read-only (computed) or just add scrollTo function to handle window scroll on change

Things that are not covered in this PR:

• scroll behavior (https://vueuse.org/core/useScroll/#smooth-scrolling)

---

What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

Before submitting the PR, please make sure you do the following

• Read the Contributing Guidelines.
• Read the Pull Request Guidelines.
• Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• Ideally, include relevant tests that fail without this PR but pass with it.

[webfansplz]

See #1996 (comment)

[Solant]

@webfansplz thanks

Should I close this PR as it is duplicate/deprecated functionality (e.g. migration from useWindowScroll to useScroll), or I can update PR to call useScroll with window parent, to make things work seamlessly?

[webfansplz]

@webfansplz thanks

Should I close this PR as it is duplicate/deprecated functionality (e.g. migration from useWindowScroll to useScroll), or I can update PR to call useScroll with window parent, to make things work seamlessly?

I think we can just close it, anyway, thanks for the PR.