Don't require Finnish notation or Subject suffixes for forkJoin or combineLatest properties

[ChrisMBarr]

This addresses #40 (as well as a personal annoyance for me!)

Before

combineLatest({
  number$: of(0),
  letterSubject$: new BehaviorSubject('a')
});

After

combineLatest({
  number: of(0),
  letter: new BehaviorSubject('a')
});

---

I am not sure if I did this in the best way possible or if this catches any/all edge cases. Please let me know if this can be improved somehow

[JasonWeinzierl]

Thank you! I moved the utility to a separate file (and other comments on the commit I pushed). Nice to have this annoyance fixed!

[JasonWeinzierl]

This is released in v0.7.4

[ChrisMBarr]

Good changes, and good call updating the docs as I forgot about that!

This will solve a real annoyance for my team. We have a NestJS server that in many cases just combines observables and returns them. unless this rule was ignored then we'd have properties with Finnish notation returned in the JSON data of the API request. Today I'll be updating and going through to remove all of these rule disables!