Make Widgets clickable

data/screens.json

@@ -1,6 +1,7 @@
 {
     "loadingScreen": [
         {
+            "unique_name": "widget0",
             "position": [0.0, 0.0],
             "dimensions": [1.0, 1.0],
             "texture": "data/res/textures/loading.png"
@@ -8,14 +9,22 @@
     ],
     "mainMenuScreen": [
         {
+            "unique_name": "widget1",
             "position": [0.5, 0.5],
             "dimensions": [0.25, 0.25],
             "texture": "data/res/textures/container.png"
         },
         {
+            "unique_name": "widget2",
             "position": [0.75, 0.0],
             "dimensions": [0.25, 0.25],
             "texture": "data/res/textures/tex2.png"
+        },
+        {
+            "unique_name": "widget3",
+            "position": [0.05, 0.05],
+            "dimensions": [0.35, 0.35],
+            "texture": "data/res/textures/loading.png"
         }
     ]
 }