These renamings should not be done while the PMD 6 branch remains active, as they could introduce more conflicts when merging master back into the pmd 7 branch.

• ASTClassOrInterfaceType -> ASTClassType
• ASTClassOrInterfaceDeclaration -> ASTClassDeclaration

These currently match the JLS productions, but we're not the JLS and can use more convenient names.

• ASTAnyTypeDeclaration -> ASTTypeDeclaration (ASTTypeDeclaration is a node in the current tree but was removed)
• ASTMethodOrConstructorDeclaration -> ASTExecutableDeclaration
• AccessNode -> ModifierOwner

This issue was extracted from #2701