api/vimeo: add support for specifying access tokens (#1443)

* the android client now also needs a valid device_identifier, but already generated access_tokens work fine
* you can also get them from a rooted device by mitm'ing the device while starting vimeo for the first time or going into its data directory and searching for the token in shared_prefs/

docs/examples/cookies.example.json

@@ -13,5 +13,8 @@
     ],
     "youtube": [
         "cookie=<replace_this>; b=<replace_this>"
+    ],
+    "vimeo": [
+        "access_token=<replace_this>"
     ]
 }