Bring Github Action into intranet, access nodes/devices from CI workflows.

- name: OmniEdge for Github Action
  uses: omniedgeio/github-action@v1
  with:
    securitykey: ${{ secrets.OMNIEDGE_SECURITY_KEY }}
    virtualnetworkid: ${{ secrets.OMNIEDGE_VIRTUALNETWORK_ID }}

1. Sign up your account
2. Generate Security-key, and get the Virtual Network ID from Dashboard
3. Put your own Security-key and Virtual Network ID into your action