Game bar (#392)

* Fix games with custom touch control sometimes not showing touch icon

* Create game-bar with screenshot button

* Disable Game bar when opening the Guide

* Remove SCREENSHOT_BUTTON_POSITION pref

* Make the touch control action functional

* Show game bar when the game starts

* Fix 720p/High not working (#387)

* Update icons

* Update game bar's animations

* Reset states of Game bar actions before playing

* Don't show Touch control action on non-touch-supported devices

* Clean up

* Update translations

* Update actions' texts

* Clean up

src/assets/svg/caret-right.svg

@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="100%" stroke="#fff" fill="#fff" height="100%" viewBox="0 0 13 23" fill-rule="evenodd" stroke-linejoin="round" stroke-miterlimit="2">
+    <g transform="matrix(.399603 0 0 .709528 0 0)">
+        <path d="M1.601 2.727l23.255 13.097L1.601 28.922c-.977.55-.977 1.443 0 1.993s2.563.55 3.539 0l25.025-14.094c.977-.55.977-1.443 0-1.993L5.14.734c-.977-.55-2.563-.55-3.539 0s-.977 1.443 0 1.993z"/>
+    </g>
+</svg>