feat(dgw): support VMConnect through RDCleanPath

[irvingouj@Devolutions (irvingoujAtDevolution)]

Allow PCB-first RDCleanPath requests to omit X.224 so Gateway sends the complete preconnection blob and establishes TLS before handing CredSSP and X.224 back to the client.

Keep the ordinary and credential-injection fronts on their existing X.224-first sequence.

Depends-on: Devolutions/IronRDP#1505

Co-authored-by: Copilot 223556219+Copilot@users.noreply.github.com

[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

[irvingouj@Devolutions (irvingoujAtDevolution)]

will replace with commit/new version later