Refactor JavaTypeTransformer and ValueParameterResolver

Use an instanceof-chain on a JavaType instance instead of PsiTypeVisitor in
TypeTransformer. Add a special method to handle vararg types, use it in
ValueParameterResolver
Introduce JavaClassifier

JavaClassifier is a common type for JavaClass and JavaTypeParameter. In almost
all of the places JavaClass remains to be JavaClass, except for the resolution
result of JavaClassType, which can be a type parameter. Add an assertion that
JavaClass is created only for a class and not for a type parameter. Delete
different creations of JavaClass in 'idea' (where there can be a type
parameter) by changing the interface of util functions.

Delete JavaModifierListOwnerImpl, extract its methods into JavaElementUtil and
use these implementations for every JavaModifierListOwner

Continue refactoring JavaTypeTransformer to work with JavaType, not PsiType
Rename JavaClassType to JavaClassifierType
Migrate JavaTypeTransformer from PsiType to JavaType

Add more wrapper methods to JavaClassifierType.

Inline the utility method adjustTypeUsageWithMutabilityAnnotations to the two
places where it was used. Also add JavaAnnotationOwner and change signature of
JavaAnnotationResolver to take JavaAnnotationOwner, not PSI
Migrate JavaAnnotationResolver from PSI to JavaElement

Create a bunch of annotation argument classes, which serve as wrappers over
PsiAnnotationMemberValue class, but also have a Name
Rename JavaCompileTimeConstResolver to AnnotationArgumentResolver
Move classes around in java-specific parts of compiler

- move JetClsMethod and JetJavaMirrorMarker to 'jetAsJava' package
- move JetClsMethodImpl out of 'wrappers' packages
- move TypeVariableResolver to 'resolver' package, make it package-local
- move MembersCache and NamedMembers to 'scope', make the former package-local