LPS-36364 New fetcher methods in the base service impls

Hey Mike,

@zberentey told that you asked for an autogenerated fetch method in the base service impls, what fetches based on the UUID and groupId. I've implemented that part.

Besides that I've applied to more changes:

- I've realized that we have fetch method for the group based on the UUID and group id, but for the group it doesn't make too much sense. There is no reason to deprecate because it wasn't in the previous release.
- I've also recognized a pattern for fetchSomethingByUuidAndCompanyId - I've added the code piece for that now it's atuomatically generated.

Thanks,

Máté