Mobile sync support (#4173)

* WIP on mobile connections
todo: register devices
todo: data sync or connection

* improve connection flow and registration
add streaming from service
TODO: user scoping

* dev build mobile support

* fix path

* handle relative URLs

* handle localhost access in product

* add device de-register

* sync styles

* move UI to be out of the normal path since beta only

* Add user scoping to mobile connection requests
Remigrate DB for user associations
Implement temp token registration to prevent unauthorized device registration requests
cleanup middlewares

.github/workflows/dev-build.yaml

@@ -6,7 +6,7 @@ concurrency:
 
 on:
   push:
-    branches: ['multilingual-native-embedder-selection'] # put your current branch to create a build. Core team only.
+    branches: ['mobile-support'] # put your current branch to create a build. Core team only.
     paths-ignore:
       - '**.md'
       - 'cloud-deployments/*'