Make BaseModule a real entity

- Add all dependencies, necessary to run the content (baseUrl, Arguments)
- Encapsulate all POST/GET/DELETE/PATCH/PUT methods as protected methods inside the BaseModule
- Return Module content ONLY per `BaseModule::run()` (including the Hook logic there as well)

src/Module/Item/Activity.php

@@ -38,7 +38,7 @@ use Friendica\Network\HTTPException;
  */
 class Activity extends BaseModule
 {
-	public function rawContent()
+	protected function rawContent(array $request = [])
 	{
 		if (!Session::isAuthenticated()) {
 			throw new HTTPException\ForbiddenException();