tiktok is back!

- added support for tiktok (images won't work, they're only accessible through the app)
- hopefully main input bar is now not rounded on ios, i fucking hate apple
- if service is not supported, a correlating error will appear, not generic one
- removed duplicates from config that are present in package json already
- tiny bit of clean up

src/modules/services/_config.json

@@ -66,7 +66,7 @@
         "enabled": false
     },
     "tiktok": {
-        "patterns": [":pageid/:type/:postid", ":id"],
-        "enabled": false
+        "patterns": [":user/:type/:postId", ":id"],
+        "enabled": true
     }
 }