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/Api/Mastodon/Instance.php

@@ -33,7 +33,7 @@ class Instance extends BaseApi
 	/**
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public function rawContent()
+	protected function rawContent(array $request = [])
 	{
 		System::jsonExit(InstanceEntity::get());
 	}