Migrate Kyma Companion to UI5v2

[chriskari]

Description
The POC version already implements significant parts of the intended UI design using UI5 Web Components version 1. With Busola migrating to UI5 Web Components version 2, the components in the POC must be reviewed and updated to ensure compatibility with version 2 and account for any changes introduced during the migration.

Tasks
(To be completed after the UI5v2 migration is merged with the main branch):

• Pull the latest changes from main and resolve any merge conflicts.
• Identify UI5 Web Components in the POC that are affected by the migration to version 2.
• Update and refactor components to align with version 2 changes.
• Verify that the UI design and functionality remain consistent with the intended design.

Expected Outcome:

1. All UI components in the POC use UI5 Web Components version 2.
2. The UI design and functionality are preserved or improved.