DISTS: IOS7: Add touch mode assets

The Android backend have two on-screen controls. One for configuring
the touch mode setting and one for accessing the main menu.
The on-screen controls are presented as two clickable buttons.
The image of the touch mode setting changes depending on which mode
that is configured.

Add the same images as assets to the iOS port. Unfortunately it's
not possible to share the same resource files becuase the assets
in Android are of type Android vector drawable.
iOS can handle vector based images, but only in form as a PDF.
There's a lot to read about this format but luckily there are free
converter tools between the formats.

Add converted versions to the iOS7 port.

dists/ios7/Images.xcassets/Contents.json

@@ -1,6 +1,6 @@
 {
   "info" : {
-    "version" : 1,
-    "author" : "xcode"
+    "author" : "xcode",
+    "version" : 1
   }
-}
+}

dists/ios7/Images.xcassets/ic_action_gamepad.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images": [
+    {
+      "idiom": "universal",
+      "filename": "ic_action_gamepad.pdf"
+    }
+  ],
+  "info": {
+    "version": 1,
+    "author": "xcode"
+  }
+}

dists/ios7/Images.xcassets/ic_action_keyboard.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images": [
+    {
+      "idiom": "universal",
+      "filename": "ic_action_keyboard.pdf"
+    }
+  ],
+  "info": {
+    "version": 1,
+    "author": "xcode"
+  }
+}

dists/ios7/Images.xcassets/ic_action_menu.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images": [
+    {
+      "idiom": "universal",
+      "filename": "ic_action_menu.pdf"
+    }
+  ],
+  "info": {
+    "version": 1,
+    "author": "xcode"
+  }
+}

dists/ios7/Images.xcassets/ic_action_mouse.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images": [
+    {
+      "idiom": "universal",
+      "filename": "ic_action_mouse.pdf"
+    }
+  ],
+  "info": {
+    "version": 1,
+    "author": "xcode"
+  }
+}

dists/ios7/Images.xcassets/ic_action_touchpad.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images": [
+    {
+      "idiom": "universal",
+      "filename": "ic_action_touchpad.pdf"
+    }
+  ],
+  "info": {
+    "version": 1,
+    "author": "xcode"
+  }
+}