Revert "Revert "Replace Module::init() with Constructors""

This reverts commit 89d6c89b67.

src/Capabilities/ICanHandleRequests.php

@@ -7,14 +7,6 @@ namespace Friendica\Capabilities;
  */
 interface ICanHandleRequests
 {
-	/**
-	 * Initialization method common to both content() and post()
-	 *
-	 * Extend this method if you need to do any shared processing before either
-	 * content() or post()
-	 */
-	public function init();
-
 	/**
 	 * Module GET method to display raw content from technical endpoints
 	 *