WIP: kor backend - http server

[hagay3]

What this PR does / why we need it?

Defines KOR HTTP server that uses the Gorilla Mux router, JWT authentication, and Swagger documentation

Functionality:

• Security: The API requires JWT tokens for most routes, with optional disabling of auth via an environment variable (NO_AUTH).
• Documentation: Swagger provides a UI for exploring and interacting with the API endpoints.
• HTTPS: The server runs with HTTPS using TLS, ensuring secure communication.

PR Checklist

• [ ] This PR adds K8s exceptions (false positives)
• [X] This PR adds new code
• [ ] This PR includes tests for new/existing code
• [ ] This PR adds docs

GitHub Issue

Notes for your reviewers