Fixes #239 - Use new restoration token format, pass stored homeserver url to the client builder when restoring, dropping the need for a network request

- bumped the rust sdk to v1.0.17-alpha
- move all UserSession related files to Services/UserSession

ElementX/Sources/Services/Client/ClientProxy.swift

@@ -95,7 +95,7 @@ class ClientProxy: ClientProxyProtocol {
                     .build()
 
                 self.slidingSync = try slidingSyncBuilder
-                    .addView(view: slidingSyncView)
+                    .addView(v: slidingSyncView)
                     .withCommonExtensions()
                     .build()
 
@@ -136,9 +136,9 @@ class ClientProxy: ClientProxyProtocol {
         client.homeserver()
     }
 
-    var restoreToken: String? {
+    var restorationToken: RestorationToken? {
         do {
-            return try client.restoreToken()
+            return try RestorationToken(session: client.session())
         } catch {
             MXLog.error("Failed retrieving restore token with error: \(error)")
             return nil