snapcraft CI release

[jneo8]

Hi maintainers,

The latest version of snap on https://snapcraft.io/golang-openstack-exporter is August 2021.

It will be nice to have the CI to automatically release latest snap build to the edge channel.

How to do it?

There are multiple practices:

• Use github action
• Build from Github

So we want to ask opinion from @niedbalski , which way you prefer to have?

And if we want to use the github ci, I can help to create the PR.(And we need your token for sure)

[Pjack]

Hi @niedbalski , may we get your feedback about the release process? or at least please release the latest version to snap store. thanks!