Initial cert validation test

[benjaminleonard]

Fixes #2580 and related to #2578

Idea from @augustuswm to soft validate the cert. Unfortunately I think we need a library to parse the cert but I lazy imported it to avoid adding to the main bundle since most users will not see this.

Principally the risk here is what I dont know about certs:

1. wildcard handling might need to be sophisticated
2. certs that arrange slightly different in a way that parseCertificate() doesn't catch

But feels, like the image soft validation, that it could be a good quality of life improvement for something that is potentially very painful when not done correctly. We might want to label the CN and SAN on the messages list of found names.

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Name	Status	Preview	Updated (UTC)
console	✅ Ready (Inspect)	Visit Preview	Nov 27, 2024 3:33pm

[benjaminleonard]

Added tests, improved wildcard handling and also a message in case the certificate cannot be parsed.

Message copy needs work.

[benjaminleonard]

Do we have a good way of getting the domain? I vaguely remember some discussion around with the IdP setup.

[charliepark]

Is this your card? https://github.com/oxidecomputer/console/blob/require_tls_cert/app/forms/idp/util.ts#L16-L17

[augustuswm]

This looks awesome, thanks for picking it up. I think initial rack install will certainly benefit from it.