Added ArrayTypeTree and support for annotated dimensions of array types.

[traceyyoshima]

Changes:

• Updated J.ArrayType to preserve annotations on dimensions.
• Removed J.ArrayType#dimensions field and added a constructor to transform old LSTs into the new model.
• Deprecated J.VariableDeclarations#dimensionsBeforeName
• ... is preserved in the J.VariableDeclarations#varargs field instead of the prefix of the variable name.
• Updated GroovyParserVisitor with the new J.ArrayType.
• Applied optimizations from Java 17 and 21 parsers to Java 11 and 8 parsers.
• J.ArrayType trees produced by the Java parser will now contain JavaType.Array instead of JavaType.Class

fixes #2911
fixes #3440
fixes #3453

[traceyyoshima]

@knutwannheden, Changes are ready for review.

Annotations on C-style arrays are still unsupported:

• The dimensions of C-style arrays like class Test { int n [] []; } or class Test { Integer[] m = { 0 }, n[] = { { 0 } }; } are still a VariableDeclarations$NamedVariable#dimensionsAfterName field.

[traceyyoshima]

Update:
There is a bug in the JavaParser where the ... is parsed into the prefix of ns in the following code:

              public class A {
                  Integer o = generic ( 0, 1, 2 );
                  Integer p = this . < Integer > generic ( 0, 1, 2 );
                            
                  public <TTTT> TTTT generic(TTTT n, TTTT... ns) { return n; }
              }

I'll address the issue along with the changes. fixed.

[knutwannheden]

I haven't looked at the details of the parser yet, but I commented on the LST model already.

[knutwannheden]

I may have missed it, but I couldn't find the updated AnnotationService. Apart from that and a few small comments I left, I think this looks very good.

[knutwannheden]

I think this looks good now and it looks like there were a few related bugs that could be squashed, which is very nice!

[knutwannheden]

As a last thing (in a separate PR) wr may want to make sure the type attribution also has all annotations for array types, if it doesn't already.

[traceyyoshima]

Rebased and squashed commits

[traceyyoshima]

As a last thing (in a separate PR) wr may want to make sure the type attribution also has all annotations for array types, if it doesn't already.

Sounds good! I did confirm the types are correct on the annotations, but I'll ensure the JavaTypes have the annotations as well.