ci: build and push container for api

[JSPRH]

Description

This PR extends the pipeline to build a Docker container for the api and push it to the GitHub container registry.

• Add Dockerfile to api app
• Add build-docker to api's NX workspace
• Use Node image based on .nvmrc
• Add Docker image build and publish to Github container registry to CI's API build and deploy action
• Use Docker build action to utilize Github Actions Cache: https://docs.docker.com/build/cache/backends/gha/

Container Registry: https://github.com/kordis-leitstelle/kordis/pkgs/container/kordis-api

Checklist:

• The title of this PR and the commit history is conform with
  the Conventional Commits specification.
• I have performed a self-review of my own code.
• My changes generate no new warnings, SonarCloud reports no Vulnerabilities, Bugs or Code Smells.
• I have added tests (unit and E2E if user-facing) that prove my fix is effective or that my feature works,
  Coverage > 80% and not less than the current coverage of the main branch.
• The PR branch is up-to-date with the base branch. In case you merged main into your feature branch, make sure you have run the latest NX migrations (nx migrate --run-migrations).

[github-actions]

🚀 Deployment Preview

SPA: https://jolly-glacier-057c0e703-303.westeurope.2.azurestaticapps.net
API: https://kordis-api-pr303.azurewebsites.net
Commit SHA: 62570cb

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[timonmasberg]

lgtm

[timonmasberg]

🎉 This PR is included in version 1.0.0 🎉

The release is available on GitHub release

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