Add OpenAPI spec 3.0 support (beta)

Co-authored-by: Akihito Nakano <sora.akatsuki@gmail.com>
Co-authored-by: Jeremie Bresson <dev@jmini.fr>
Co-authored-by: Jim Schubert <james.schubert@gmail.com>
Co-authored-by: Martin Delille <martin@phonations.com>
Co-authored-by: Tomasz Prus <tomasz.prus@gmail.com>
Co-authored-by: William Cheng <wing328hk@gmail.com>

samples/server/petstore/java-play-framework-async/app/Module.java

@@ -0,0 +1,13 @@
+import com.google.inject.AbstractModule;
+
+import controllers.*;
+
+public class Module extends AbstractModule {
+
+    @Override
+    protected void configure() {
+        bind(PetApiControllerImpInterface.class).to(PetApiControllerImp.class);
+        bind(StoreApiControllerImpInterface.class).to(StoreApiControllerImp.class);
+        bind(UserApiControllerImpInterface.class).to(UserApiControllerImp.class);
+    }
+}