New rule: avoid_similar_names

[danylo-safonov-solid]

e.g. if names differ by one character, especially if the characters are similar (e.g. digit 1 and letter l)

BAD:

bool isEqual(SomeClass someClass1, SomeClass someClass2) ...

BETTER:

bool isEqual(SomeClass someClassA, SomeClass someClassB) ...

GOOD:

bool isEqual(SomeClass that, SomeClass other) ...

GOOD:

bool isEqual(SomeClass first, SomeClass second) ...