Support comments in user secrets

[Cethric]

Description

This solution takes inspiration from JsonConfigurationFileParser.cs in runtime to skip comments in the user secrets json file.
Completing this as a good first issue before trying to work on something larger.

Fixes #3284

Checklist

• Is this feature complete?
  • Yes. Ready to ship.
  • No. Follow-up changes expected.
• Are you including unit tests for the changes and scenario tests if relevant?
  • Yes
  • No
• Did you add public API?
  • Yes
    • If yes, did you have an API Review for it?
      • Yes
      • No
    • Did you add <remarks /> and <code /> elements on your triple slash comments?
      • Yes
      • No
  • No
• Does the change make any security assumptions or guarantees?
  • Yes
    • If yes, have you done a threat model and had a security review?
      • Yes
      • No
  • No
• Does the change require an update in our Aspire docs?
  • Yes
    • Is this introducing a breaking change?
      • Yes
        • Link to aspire-docs issue (please use this breaking-change template):
      • No
        • Link to aspire-docs issue (please use this doc-idea template):
  • No

[sebastienros]

nit: I know that JsonSerializerOptions should be static, maybe this one should be too. At least if it can it wouldn't hurt.

[davidfowl]

Agree

[eerhardt]

JsonDocumentOptions is a struct and only contains an int, a bool, and an enum. It doesn't cache things like JsonSerializerOptions does.