WD-8401 - Remove secrets

[huwshimi]

Done

• Add a panel to remove secrets.

QA

• Get the URI for a secret.
• In a terminal add a few revisions to the secret: juju update-secret <URI> token=34ae35facd4 (you can run the same command a few times and each time a new revision will get created).
• Open secrets tab.
• Find the row for the secret you added the revisions to.
• Open the actions menu on the right hand side and click "Remove secret".
• In the panel either choose a revision or click the checkbox to remove them all.
• Submit the form and confirm.
• If all revisions were removed the secret should get removed from the list.

Details

https://warthogs.atlassian.net/browse/WD-8401

[webteam-app]

Demo starting at https://juju-dashboard-1704.demos.haus

[codecov[bot]]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (e060dcb) 95.44% compared to head (02e6af7) 95.46%.

Files	Patch %	Lines
src/panels/RemoveSecretPanel/RemoveSecretPanel.tsx	95.65%	2 Missing :warning:
src/panels/RemoveSecretPanel/Fields/Fields.tsx	95.23%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1704 +/- ## ========================================== + Coverage 95.44% 95.46% +0.01% ========================================== Files 187 189 +2 Lines 5596 5686 +90 Branches 1616 1638 +22 ========================================== + Hits 5341 5428 +87 - Misses 235 238 +3 Partials 20 20 ```

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[huwshimi]

Looks good and works as expected locally (apart from the backend bug related to removing the last revision) 🚀

I'm going to land this even though this bug exists, as this is not the only place this bug affects us, and once we have a solution we can update all the places (if it doesn't get rectified on the backend).