refactor: replaced signalStore() overloads with a generic

[KratosAurion1]

PR Checklist

Please check if your PR fulfills the following requirements:

• [ x ] The commit message follows our guidelines: https://github.com/ngrx/platform/blob/main/CONTRIBUTING.md#commit
• [ x ] Tests for the changes have been added (for bug fixes / features)
• [ x ] Documentation has been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ x ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Other... Please describe:

What is the current behavior?

signalStore() has multiple semi-redundant overloads

Closes #

What is the new behavior?

signalStore() has a single signature

Does this PR introduce a breaking change?

[ ] Yes
[ x ] No

Other information

[rainerhahnekamp]

I am going to close that one. We don't have an issue with that, so it doesn't follow the contribution guidelines.

Apart from that, we have so many overloads because each SignalStoreFeature needs to infer the exact type of its previous ones.

You should also check the build locally first. The PR doesn't even compile.