Create a basic structure to fetch the api version

Signed-off-by: Christian Wolf <github@christianwolf.email>

appinfo/routes.php

@@ -9,6 +9,7 @@
  */
 return [
 	'routes' => [
+		['name' => 'main#getApiVersion', 'url' => '/api/version', 'verb' => 'GET'],
 		['name' => 'main#index', 'url' => '/', 'verb' => 'GET'],
 		['name' => 'main#home', 'url' => '/home', 'verb' => 'GET'],
 		['name' => 'main#keywords', 'url' => '/keywords', 'verb' => 'GET'],

lib/Controller/MainController.php

@@ -55,6 +55,22 @@ class MainController extends Controller {
 
 		return new TemplateResponse($this->appName, 'index', $view_data);  // templates/index.php
 	}
+	
+	/**
+	 * @NoAdminRequired
+	 * @NoCSRFRequired
+	 * @return DataResponse
+	 */
+	public function getApiVersion(): DataResponse {
+		$response = [
+			'cookbook_version' => [0,7,7], /* VERSION_TAG */
+			'api_version' => [
+				'major' => 0,
+				'minor' => 1
+			]
+		];
+		return new DataResponse($response, 200, ['Content-Type' => 'application/json']);
+	}
 
 	/**
 	 * @NoAdminRequired