TUN-6142: Add tunnel details support to RPC

This commit adds the tunnel details to RPC register connection response
so we can have access to some of the details associacted to the tunnel
that only the edge knows.

Currently this is limited to knowing if the tunnel is remotely managed
or not. In the future we could extend this with more information.

tunnelrpc/pogs/connectionrpc.go

@@ -224,8 +224,9 @@ func (a *TunnelAuth) UnmarshalCapnproto(s tunnelrpc.TunnelAuth) error {
 }
 
 type ConnectionDetails struct {
-	UUID     uuid.UUID
-	Location string
+	UUID                    uuid.UUID
+	Location                string
+	TunnelIsRemotelyManaged bool
 }
 
 func (details *ConnectionDetails) MarshalCapnproto(s tunnelrpc.ConnectionDetails) error {
@@ -235,6 +236,7 @@ func (details *ConnectionDetails) MarshalCapnproto(s tunnelrpc.ConnectionDetails
 	if err := s.SetLocationName(details.Location); err != nil {
 		return err
 	}
+	s.SetTunnelIsRemotelyManaged(details.TunnelIsRemotelyManaged)
 
 	return nil
 }
@@ -252,6 +254,7 @@ func (details *ConnectionDetails) UnmarshalCapnproto(s tunnelrpc.ConnectionDetai
 	if err != nil {
 		return err
 	}
+	details.TunnelIsRemotelyManaged = s.TunnelIsRemotelyManaged()
 
 	return err
 }