fix(jetsocat): embed Windows icon and version metadata

[Marc-André Moreau (mamoreau-devolutions)]

Embeds the Devolutions Gateway icon and Windows version metadata into jetsocat.exe on Windows so the binary has branded iconography and standard file properties in Explorer.

this will make automatic app icon extraction easier for jetsocat

[Marc-André Moreau (mamoreau-devolutions)]

Implementation notes:

• Adds a Windows-only build script to jetsocat and compiles both a generated VERSIONINFO resource and a static icon resource.
• Reuses package/WindowsManaged/Resources/DevolutionsGateway.ico so jetsocat.exe gets the existing Devolutions Gateway icon without duplicating assets.
• Uses CARGO_PKG_VERSION to generate the file and product version metadata embedded into the executable.
• Adds embed-resource as a Windows-only build dependency and updates Cargo.lock accordingly.

Validation:

• cargo build -p jetsocat -q

[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