Added Twitch app CDN's (#12)

Signed-off-by: Toakan <tad@forthelulz.co.uk>

cache_domains.json

@@ -82,6 +82,11 @@
 			"description": "CDN for uplay downloader",
 			"domain_files": ["uplay.txt"]
 		},
+		{
+			"name": "twitch",
+			"description": "CDN for twitch games / mods and addons",
+			"domain_files": ["twitchapp.txt"]
+		},
 		{
 			"name": "wargaming",
 			"description": "CDN for wargaming.net",

twitchapp.txt

@@ -0,0 +1,4 @@
+d3rmjivj4k4f0t.cloudfront.net,
+addons.forgesvc.net
+media.forgecdn.net
+files.forgecdn.net