* Mass refactor of LocalCorrectionsSubProcessor methods to base

- move logic from LocalCorrectionsSubProcessor to
  LocalCorrectionBaseSubProcessor so jdt.ls can use it
- make GetterSetterCorrectionSubProcessor() public
- make JavadocTagsSubProecessor() public
- have QuickAssistProcessor use LocalCorrectionSubProcessor
  for getAssignToVariableProposals()
- add new constructor to AssignToVariableAssistProposal class