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/HTTPException/MethodNotAllowed.php

@@ -27,7 +27,7 @@ use Friendica\Network\HTTPException;
 
 class MethodNotAllowed extends BaseModule
 {
-	public function content(): string
+	protected function content(array $request = []): string
 	{
 		throw new HTTPException\MethodNotAllowedException(DI::l10n()->t('Method Not Allowed.'));
 	}