feat: byo catalog

[ElderMatt]

This PR introduces BYO catalog to the platform. In platform view add a catalog which points to your public catalog chart repository.

In team View, under catalogs select the catalog from which users want a chart.

Considerations

• I have tested the changes in both light and dark mode.
• I have considered the need for new unit tests.
• I have tested the changes on a cluster.
• I have included relevant documentation updates.
• I have an approved Figma design or have reflected my changes in Figma
• I have verified that the UI/UX is consistent in major browsers (e.g., Chrome, Firefox, Safari, Edge).
• I have tested the changes for responsiveness in different screen resolutions.
• I have tested expected error states and verified that the user is presented with informative error messages.
• I have tested the feature with unusual or extreme inputs (e.g., very long strings, empty states, clicking a button multiple times quickly).

[dennisvankekem]

LGTM

[ferruhcihan]

Tested, it works, LGTM