Add game.url command

content/BuiltinCommands/game.url.md

@@ -0,0 +1,21 @@
+---
+title: "game.url"
+description: "Opens a URL"
+layout: "definition"
+page_status: 
+# - 'stub' # Not going to expand
+---
+
+## Usage
+
+```txt
+game.url <url>
+```
+
+Where `<url>` is an url you want to open, for example <https://grannysmithgame.com/>
+
+<!--
+optional arguments are written in square brackets
+
+below you can add examples
+--->