Move Github Email notification of weex-cli,weex-loader to commits@weex.apache.org

[申远]

Hi, community

As this mailing is getting noisy due to the Github Notification, I am going
to move those notification to comm...@weex.apache.org

A corresponding JIRA issue [1] is created.

[1] https://issues.apache.org/jira/browse/INFRA-19509

Best Regards,
YorkShen

申远