Stable release of `@tanstack/angular-query` and `@tanstack/angular-query-devtools` packages

[arnoud-dv]

Issue to track what remains to be done for a stable release (see sub issues below).

Anyone wanting to help out, this would be most useful for these topics:

Review and contribute to PRs

injectQueries #8704 Update: will be done after the stable release
Angular Query Persister Plugin #8324 ✅

Decisions - please give your feedback

what needs to run in the injection context #8714 ✅
framework version support policy #8707 ✅