chore(ci): create a CI workflow that generates an OpenAPI schema when a new release is made

[nicomiguelino]

Changes

• Bumps API version from 1.2.0 to 2.0.0
• Creates a CI workflow that generates an OpenAPI schema in JSON

Screenshots

CI Runs

• You can download the OpenAPI schema (in JSON, under the Artifacts section) here: https://github.com/Screenly/Anthias/actions/runs/11920523658/artifacts/2209493836
• https://github.com/Screenly/Anthias/actions/runs/11920523658
  • Proof that a release has been created, although I've commented out the steps that creates and uploads the Balena disk images

[nicomiguelino]

@vpetersson, @rusko124 please also see/review Screenly/developer-portal#31.

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud