FEATURE #2354 @2h30m: add pipeline for edit and create new content

app/CMS/Contracts/Content/SavePipeline/Process.php

@@ -0,0 +1,16 @@
+<?php
+namespace App\CMS\Contracts\Content\SavePipeline;
+
+use App\Models\Content\Content;
+
+interface Process {
+    /**
+     * Process and modify given page
+     *
+     * @param Content $page
+     * @param array   $input
+     *
+     * @return mixed
+     */
+    function handle(Content & $page, array & $input);
+}