[Copilot]

New-CloudEvent, Set-CloudEventData, and Set-CloudEventJsonData lacked a parameter for setting the CloudEvents dataschema attribute.

• API: Add optional -DataSchema to all three cmdlets, accepting an absolute URI.
• Compatibility: Preserve an existing schema when data setters omit the parameter.
• Coverage and docs: Add regression tests for assignment, preservation, and invalid URIs; document the parameter and usage.

$cloudEvent | Set-CloudEventJsonData `
    -Data @{ 'Foo' = 'Hello' } `
    -DataSchema 'https://example.com/schema.json'

• Fixes [BUG] There appears to be no way to set the DataSchema attribute  #55

[duglin]

@oising look ok to you?

[duglin]

@copilot please fix the CI issues

[oising]

@oising look ok to you?

Looking... It seems there is no binding-by-property-name configured on the parameter. I'm looking at the suite as a whole to see if this was ignored en-masse

[oising]

@oising look ok to you?

Lgtm

Room for improvement but not in this PR

[duglin]

You sure? We could ask copilot to improve it

[oising]

You sure? We could ask copilot to improve it

Well okay, hold off until tomorrow and I'll give you some hints for the robot