Don't rename local classes

[mbtools]

Nice to have...

Renaming local classes is only necessary if there's a naming conflict. In abapGit, the local classes actually have unique names, so merge would work without renaming.

Maybe add an option to trigger renaming/not renaming (and don't rename for AG).

Key reason: Debugging.

[sbcgua]

Probably the renaming logic should be just smarter and rename only the duplicates. And maybe try using short hash suffix first. Or maybe even just a number (I think lcl_some_stuff1 is not a usual name :)