Add IgnoreComments and AllowTrailingCommas options to Test-Json cmdlet

[ArmaanMcleod]

PR Summary

Fixes #20782

Added IgnoreComments and AllowTrailingCommas options to Test-Json -Option.

PR Context

Currently with `Test-Json it does not allow comments and trailing commas.

Given the cmdlet uses System.Text.Json we can use JsonDocumentOptions to include CommentHandling and AllowTrailingCommas.

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[iSazonov]

I wonder why WG suggest Option as array for new parameter.
The cmdlet uses JsonNode.Parse with default JsonDocumentOption for parsing.
The JsonDocumentOption has only 3 fields and it's unbelievable that this number of parameters will be increased significantly in the future. So it would be more convenient for us to just add new individual parameters to this cmdlet as AllowTrailingCommas, CommentHandling and maybe MaxDepth.

[iSazonov]

Does ValidateSet really work for array?

[SteveL-MSFT]

Yes, https://learn.microsoft.com/en-us/powershell/scripting/developer/cmdlet/validateset-attribute-declaration?view=powershell-7.4#remarks

[ArmaanMcleod]

I wonder why WG suggest Option as array for new parameter.
The cmdlet uses JsonNode.Parse with default JsonDocumentOption for parsing.
The JsonDocumentOption has only 3 fields and it's unbelievable that this number of parameters will be increased significantly in the future. So it would be more convenient for us to just add new individual parameters to this cmdlet as AllowTrailingCommas, CommentHandling and maybe MaxDepth.

@iSazonov Yeah that was my thought as well. Given number of existing options is not much maybe converting all above options to switch parameters is cleaner. Not sure what the demand for MaxDepthis, and probably need to change how options are passed in since that one needs an integer.

[SteveL-MSFT]

LGTM

[SteveL-MSFT]

Yes, https://learn.microsoft.com/en-us/powershell/scripting/developer/cmdlet/validateset-attribute-declaration?view=powershell-7.4#remarks

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