Migrate env snapshot command to Runner client abstraction?

[sourishkrout]

To avoid duplication and reuse the same config init logic.

runme/internal/cmd/environment.go

Lines 76 to 87 in b79756e

	credentials := credentials.NewTLS(tlsConfig)
	conn, err := grpc.Dial(addr, grpc.WithTransportCredentials(credentials))
	if err != nil {
	return errors.Wrap(err, "failed to connect")
	}
	defer conn.Close()
	client := runnerv1.NewRunnerServiceClient(conn)
	meClient, err := client.MonitorEnvStore(context.Background(), &runnerv1.MonitorEnvStoreRequest{
	Session: &runnerv1.Session{Id: sessionID},
	})