Add missing Play icon

The `play` icon is readded to the theme and remapped to the `Play.svg`.

Found by @fieldOfView.

CURA-8520

resources/themes/cura-light/icons/default/Play.svg

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+<path d="M5,20V4c0-0.8,0.9-1.3,1.5-0.9l13,8c0.6,0.4,0.6,1.3,0,1.7l-13,8C5.9,21.3,5,20.8,5,20z M7,5.8v12.4
+	L17.1,12L7,5.8z"/>
+</svg>

resources/themes/cura-light/icons/deprecated_icons.json

@@ -339,6 +339,10 @@
         "new_icon": "Link",
         "size": "default"
     },
+    "play": {
+        "new_icon": "Play",
+        "size": "default"
+    },
     "print_time": {
         "new_icon": "Clock",
         "size": "default"