allow screenshot from game as thumbnail header

backend/controllers/api/GamesController.js

@@ -1,4 +1,7 @@
 import express from 'express';
+import multipart from 'connect-multiparty';
+
+const multipartMiddleware = multipart();
 
 /**
  * GamesController. API for the games manager, граничен клас за комуникация с модула за игрови дефиниции
@@ -35,6 +38,19 @@ class GamesController{
             }
         });
 
+        router.post('/:id/header', multipartMiddleware, async (req, res)=>{
+            try{
+                let id = parseInt(req.params.id);                
+                await game.setHeader(req, id, req.files.file);
+                res.json({status: 'OK'});
+                am.audit(req, `game-header-set`, id);
+            }catch(err){
+                console.error(err);
+                res.status(500).json({status: 'ERR', err});
+                am.audit(req, `game-header-error`, id, {e: err});
+            }
+        });
+
         /**
          * API: POST /api/game/ List games by given criteria, търсене в игрови дефиниции
          * @function list