feat(shared-model): generate models from graphql schema

[timonmasberg]

Description

Introduces npm run gql-to-model which performs code to schema actions and then uses graphql-codegen to generate typescript types from the schema.
Furthermore, adds the shared-models library and merges shared-auth (which only includes models) into the new lib.

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).

[sonarcloud]

Quality Gate passed

Issues
0 New issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[timonmasberg]

🎉 This PR is included in version 1.0.0 🎉

The release is available on GitHub release

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