fix(dgw): send close code 1005 when video streaming ends

[irvingoujAtDevolution]

Trying to make the websocket_compact function return a result with a new trait.
I tried to make a Generic type for the WithExplict but faild as the combination for With and Map trait generic and bounds is beyond my comprehension. I hope @CBenoit could make a better type than this...
feel free to edit it, and let me know your thoughts, thanks!

[github-actions]

Let maintainers know that an action is required on their side

• Add the label release-required Please cut a new release (Devolutions Gateway, Devolutions Agent, Jetsocat, PowerShell module) when you request a maintainer to cut a new release (Devolutions Gateway, Devolutions Agent, Jetsocat, PowerShell module)

• Add the label release-blocker Follow-up is required before cutting a new release if a follow-up is required before cutting a new release

• Add the label publish-required Please publish libraries (`Devolutions.Gateway.Utils`, OpenAPI clients, etc) when you request a maintainer to publish libraries (Devolutions.Gateway.Utils, OpenAPI clients, etc.)

• Add the label publish-blocker Follow-up is required before publishing libraries if a follow-up is required before publishing libraries

[irvingoujAtDevolution]

@CBenoit Thanks for much easier and cleaner advice!

[CBenoit]

LGTM! I’ll leave you merge the PR! Don’t forget to update the description to include a changelog-friendly message, or to add Changelog: ignore if the change is for something that we didn’t release yet. (And I think that’s indeed the case!)