Add documentation around how to enable or disable a catalog.

[LalatenduMohanty]

We need to add docs for the feature we are adding around catalog availability i.e. user can enable or disable a catalog. Here are the reference PRs

[1] operator-framework/catalogd#421
[2] #1359

[bentito]

@LalatenduMohanty you still working on this? Is there a PR to link?

[LalatenduMohanty]

@bentito I had some draft on this but never to the chance to send the PR. I unassigned myself from this issue now.

[github-actions]

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[github-actions]

This issue has been closed due to inactivity.