Implemented leaving a gamenight on the server/database side

backend-actix/gamenight-api.yaml

@@ -129,6 +129,19 @@ paths:
         $ref: '#/components/requestBodies/JoinGamenight'
       security:
         - JWT-Auth: []
+  /leave:
+    post:
+      responses:
+        '200':
+          description: OK
+        '401':
+          $ref: '#/components/responses/FailureResponse'
+        '422':
+          $ref: '#/components/responses/FailureResponse'
+      requestBody:
+        $ref: '#/components/requestBodies/LeaveGamenight'
+      security:
+        - JWT-Auth: []
       
 components:
   schemas:
@@ -280,6 +293,11 @@ components:
         application/json:
           schema:
             $ref: '#/components/schemas/GamenightId'
+    LeaveGamenight:
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/GamenightId'
   responses:
     TokenResponse:
       description: Example response