feat: keycloak client and auth

[ChrOertlin]

Description

This PR adds a keycloak client and authentication setup to triailblazer

Added

Changed

Fixed

How to prepare for test

• ssh to hasta (depending on type of change)
• activate stage: us
• request trailblazer-stage on hasta: paxa
• install on stage:

  bash /home/proj/production/servers/resources/hasta.scilifelab.se/update-tool-stage.sh -e S_trailblazer -t trailblazer -b [THIS-BRANCH-NAME] -a

• ssh to clinical-db (depending on type of change)
• install on stage:
  bash /home/proj/production/servers/resources/clinical-db.scilifelab.se/update-trailblazer-ui-stage.sh [THIS-BRANCH-NAME]

How to test

• login to ...
• do ...

Expected test outcome

• check that ...
• Take a screenshot and attach or copy/paste the output.

Review

• tests executed by
• "Merge and deploy" approved by
  Thanks for filling in who performed the code review and the test!

This version is a

• MAJOR - when you make incompatible API changes
• MINOR - when you add functionality in a backwards compatible manner
• PATCH - when you make backwards compatible bug fixes or documentation/instructions

[sonarqubecloud]

Quality Gate passed

Issues
2 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