add auto-release

[tharvik]

tried out releasing v2.2.0 & v2.2.1 and it seems to be working.

• container image published with tag 2.2.0 & 2.2.1, "develop" image is now called edge
• npm packages have two new version 2.2.0 & 2.2.1
• we can easily write a new relase based on theses tag

so when pushing a commit and tag with npm version bumps for main packages, it works. we can release v3.0.0 anytime.