Fix tests for completion

Remove "Hashable" from expected proposals
Support JAVA_ONLY case in tests
Refactoring: rename KotlinMarkerResolutionGenerator -> KotlinAutorImportMarkerResolutionGenerator
Add 'ReplaceGet' intention
Refactoring: move methods to its super class
Add tests for 'ReplaceGet' intention
Add 'SpecifyTypeExplicit' intention
Add tests for specify type explicitly intention