Better support for renaming import paths

[amyreese]

Currently, Bowler does not support renames of modules that involve changing their parent import path. Eg, "some.path" -> "some.path2" is easy with .rename(), but "some.long.path" -> "shorter.path" isn't yet supported. This shouldn't be too difficult, just needs a special case in the existing .rename() modifier to handle this for module imports.

[GautamSharma05]

Hey,I am a Beginner can I work on it? Please assign To me