Implement type validation as part of parser (#152)

* Implement type validation as part of parser

Make sure that all LST elements or of the expected type. Type inconsistencies can occur due to the type erasure of Java generics.

* Add two missing visit calls

* Add a few more missing calls

* Move and register validator

* Polish

* `J.MethodDeclaration#typeParameters` has a non-standard accessor

rewrite-javascript-remote/src/main/java/org/openrewrite/javascript/remote/JavaScriptSenderReceiverProvider.java

@@ -20,6 +20,7 @@
 import org.openrewrite.remote.Receiver;
 import org.openrewrite.remote.Sender;
 import org.openrewrite.remote.SenderReceiverProvider;
+import org.openrewrite.remote.Validator;
 
 @AutoService(SenderReceiverProvider.class)
 public class JavaScriptSenderReceiverProvider implements SenderReceiverProvider<JS> {
@@ -37,4 +38,9 @@ public Sender<JS> newSender() {
     public Receiver<JS> newReceiver() {
         return new JavaScriptReceiver();
     }
+
+    @Override
+    public Validator newValidator() {
+        return Validator.fromVisitor(new JavaScriptValidator<>());
+    }
 }