Integrate Kyma Companion Backend with Busola Backend

[Teneroy]

Description: Integrate the Kyma Companion backend with the Busola backend to enable seamless interaction and resource fetching from the cluster. This involves providing integration capabilities, fetching resources, and documenting deployment procedures.

Subtasks:

1. Enable Backend Communication:
   • Setup the basic communication between busola-backend and fastAPI application(in cooperation with busola team)
2. Fetch Cluster Resources:
   • Decide whether we communicate directly with the cluster to get resources or we fetch them through the busola-bakend
   • Implement the basic communication(dummy one call to fetch pods from the cluster)
3. Documentation: Create comprehensive documentation on how to protect our endpoints

Acceptance Criteria:

• Endpoints are protected
• The ability to fetch cluster resources is implemented and functional.
• The communication should support the protocol for streaming
• Create comprehensive documentation on how to protect our endpoints

[marcobebway]

Follow-up:

• The Companion manager should deploy the necessary istio resources which are needed to expose and secure the companion backend API endpoints.
• The Busola backend should send requests to our companion backend, keeping in mind adding the necessary headers.
  • As a prerequisite to this, we must agree on the API endpoint naming which busola team should call.