Fix parsing errors on anonymous types in variant tags and generic arguments

[davidheff]

SonarDelphi fails to parse two constructs that the Delphi compiler accepts:

type
  TRec = record
  case Kind: (rkInt, rkDbl) of                // anonymous enum (or subrange) as a variant tag type
    rkInt: (I: Integer);
    rkDbl: (D: Double);
  end;

  TFoo = class
    Values: TArray<array[Boolean] of Double>; // anonymous array type as a generic argument
  end;

Each fails with "no viable alternative", and the whole file drops out of analysis.

Changes:

• recordVariantTag accepts an anonymous enum or subrange type as well as a type reference.
  SymbolTableVisitor already handles anonymous enums in variant tags through
  handleVarDeclaration, so the enum elements are declared and resolve.
• genericArguments accepts anonymous array, set and procedural types, all of which
  NameResolutionHelper.resolve(TypeNode) already handles.

Scope, checked against Delphi 11: the compiler also accepts anonymous pointer (TArray<^Integer>)
and enum (TArray<(a, b)>) generic arguments. I've left those out because a leading ^ overlaps
with caret-escaped character literals (#111), <( is ambiguous with a comparison in expressions,
and an anonymous enum there would need its elements declared from inside a generic argument list.
I'm happy to follow up if you'd like them covered.

Tests: grammar tests for both constructs, plus symbol table tests showing that anonymous tag enum
elements resolve and that type references inside an anonymous array generic argument resolve. The
full delphi-frontend and delphi-checks suites pass.

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