Add new `CompatibilityReference` attribute

[PandaHugMonster]

Generally it's a bad Idea to have aliases for methods (except rare cases of very targeted shortcuts).
But when developing your code, and you need to preserve the backward-compatibility - it could be handful!

Use cases (and preserve compatibility):

1. You need to rename a method
2. You create a new method, but it's compatible or partially compatible with the old one
3. You change order of arguments in a method

In all the aforementioned cases you'll have to create a new method to preserve the compatibility, and the whole or part of the functionality would migrate to this new method.

But the old method must persist as Deprecated until a certain version of your code .

-- unfinished --