There are many cases where we can suggest a clear resolution e.g.

1. no access URL
2. WebSockets are not enabled
3. wildcards domain/cert issue
4. etc.

TODO:

• Add resolution code fields on the BE (feat(coderd/healthcheck): add access URL error codes and healthcheck doc #10915)
• Refactor []warnings string to []{message, code} (refactor(coderd/healthcheck): make Warnings an object with { Code, Message } #10950)
• Add docs link to health codes on FE