Support non-CUCorrectionProposal for CodeActions

[Eskibear]

Currently all proposals for code actions are inherited from CUCorrectionProposal including the conversion logic. e.g. CodeActionHandler, QuickFixProcessor

According to definition of CUCorrectionProposal, it is

A proposal for quick fixes and quick assists that work on a single compilation unit.

And as it overrides the createChange() with a final modifier, only text changes are allowed for the proposal.

It doesn't suit for more complicated fixes like "create a new type", which involves resouce changes.
BTW current implementation of rename file proposal is not proper. Renaming a file involves a ResouceChange, so the corresponding proposal should not be CUCorrectionProposal.

I think we should do some refactoring work to support other kind of ChangeCorrectionProposal, and add corresponding conversion logic for them.