Automate the release process

[elias-pap]

• https://github.com/semantic-release/semantic-release/blob/master/docs/usage/getting-started.md#getting-started
• https://github.com/marketplace/actions/release-drafter
• https://docs.github.com/en/repositories/releasing-projects-on-github/automation-for-release-forms-with-query-parameters
• https://github.com/marketplace/actions/release-drafter
• https://www.youtube.com/watch?v=88FWrfHCIqo

[elias-pap]

Not very important. Current manual steps:

1. bump version in package.json, package-lock.json (with npm i), manifest.json
2. Open and merge PR
3. git tag vX.Y.Z
4. g push origin --tags
5. Create a release using Github UI (autogenerate notes and remove "v" from vX.Y.Z)