Automatic discovery of the sliding sync proxy. (#535)

* Automatic discovery of the sliding sync proxy.

* Handle homeserver detection from a MXID.

* Update sliding sync info link, SDK and bump patch.

Add a migration on the new version. The change in restoration token format requires the user to sign in again, but this will fail with the existing device ID.

ElementX/Sources/Screens/Authentication/LoginScreen/View/LoginScreen.swift

@@ -64,7 +64,6 @@ struct LoginScreen: View {
         LoginServerInfoSection(address: context.viewState.homeserver.address) {
             context.send(viewAction: .selectServer)
         }
-        .disabled(true) // The button is disabled for this demo.
     }
     
     /// The form with text fields for username and password, along with a submit button.
@@ -96,14 +95,6 @@ struct LoginScreen: View {
                 .onSubmit(submit)
                 .accessibilityIdentifier("passwordTextField")
             
-            // uncomment this piece of code once forgot password will be available
-//            Button { context.send(viewAction: .forgotPassword) } label: {
-//                Text(ElementL10n.ftueAuthForgotPassword)
-//                    .font(.element.body)
-//            }
-//            .frame(maxWidth: .infinity, alignment: .trailing)
-//            .padding(.bottom, 8)
-            
             Spacer().frame(height: 32)
 
             Button(action: submit) {

ElementX/Sources/Screens/Authentication/LoginScreen/View/LoginServerInfoSection.swift

@@ -48,7 +48,6 @@ struct LoginServerInfoSection: View {
                     Image(systemName: "chevron.right")
                         .foregroundColor(.element.tertiaryContent)
                         .padding(.trailing, 16)
-                        .hidden() // The button is disabled for this demo.
                 }
                 .background(RoundedRectangle(cornerRadius: 14).fill(Color.element.system))
             }