Cookie support in tcgc

[timotheeguerin]

Basic cookie support was added in TypeSpec http(for request parmater. Right now tcgc will crash if it get cookies, should maybe emit a diagnostic if this is not a goal to support

#1791 uptook the change but as it was a little more advanced to emit the diagnostic filed an issue

[MaryGao]

Our nightly ci failed with the same reason. And I don't think we have general cookie parameter support in azure core or codegen for JS yet. I didn't notice we have a real azure service impacted yet.

@lmazuel @lirenhe what is this our goal to support this? Could we directly emit a diagnostic and just ignore this parameter for now?

• typespec cookie support: [http] Add Parameter Decorator @cookie to Specify Cookie Parameters microsoft/typespec#4761

op test(@cookie MyCookie: string): string;

[timotheeguerin]

@MaryGao thats just the ts compilation right? It doesn't fail on existing specs?

[MaryGao]

Offline confirmed with @timotheeguerin this is an community contribution for a feature wanted for third party and we don't have a requirement yet for emitter so we could ignore the parameter and emit warning to let customers be aware of that for now.