Add support for remapping annotation attributes

src/main/java/net/neoforged/art/internal/EnhancedRemapper.java

@@ -42,7 +42,6 @@ public EnhancedRemapper(ClassProvider classProvider, IMappingFile map, Consumer<
     }
 
     @Override public String mapModuleName(final String name) { return name; } // TODO? None of the mapping formats support this.
-    @Override public String mapAnnotationAttributeName(final String descriptor, final String name) { return name; } // TODO: Is this just methods?
     @Override public String mapInvokeDynamicMethodName(final String name, final String descriptor) { return name; } // TODO: Lookup how the JVM resolves this and attempt to resolve it to get the owner?
 
     @Override
@@ -115,6 +114,13 @@ public Object mapValue(final Object value) {
         }
     }
 
+    @Override
+    public String mapAnnotationAttributeName(String descriptor, String name) {
+        return findMethod(Type.getType(descriptor).getClassName(), name, 0)
+                .map(MClass.MMethod::getMapped)
+                .orElse(name);
+    }
+
     private Optional<MClass> getClass(String cls) {
         if (cls == null || cls.charAt(0) == '[') // Enums values() function invokes 'clone' on the array type.
             return Optional.empty();             // I'm pretty sure that i'd require stupid hacky JVM to allow native array methods to be remapped.