feat(v4): backport some v5 apis to v4 branch

[danielpza]

This is an attempt to backport some of the new api in tanstack query v5 to v4 branch, which should make it easier to developers still on v4 to migrate to v5 by making small incremental changes to the codebase without having to commit to a big change.

Apis to backport:

• isPending alias to isLoading
• useSuspenseQuery
• useSuspenseQueries
• queryOptions?
• ...any others?
• update documentation

Additionally this pull request adds a jsdoc @deprecated label to some of the apis that are removed/renamed in v5 and suggests some alternatives

Compared to v5, no new functionality is added, so when merging back to main discard the changes introduced in this pull request

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[danielpza]

Hey @TkDodo / maintainers, hope you are doing good.

Would appreciate some feedback on this, and whether this would be likely accepted or not.

Cheers.