Properly configure the ARM64 Agent installer as an ARM64 package

[thenextman]

We need to properly mark the ARM64 installer as an ARM64 package, or else it can be installed on an x64 system (leading to a broken install).

➕ some minor installer housekeeping

[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

[Copilot]

Pull request overview

Updates the Windows MSI packaging flow to correctly set the WixSharp installer platform (x64 vs arm64) based on build/CI inputs, supporting ARM64 agent installer generation.

Changes:

• Derive MSI platform (x64/arm64) from a DAGENT_PLATFORM environment variable and wire it into the WixSharp project.
• Update CI/packaging scripts to pass architecture into the MSI build via DAGENT_PLATFORM.
• Minor refactors/updates: use named parameters for feature definitions, rename UI field usage, bump NuGet versions, and ignore downloaded binaries.

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 11 comments.

Show a summary per file

File	Description
package/AgentWindowsManaged/Resources/Features.cs	Uses named arguments for Feature construction for clarity.
package/AgentWindowsManaged/Program.cs	Adds platform resolution from env var and applies it to WixSharp project platform; adjusts default artifact paths.
package/AgentWindowsManaged/Dialogs/FeaturesDialog.cs	Renames FeatureItem UI backing field usage from View to ViewModel.
package/AgentWindowsManaged/DevolutionsAgent.csproj	Updates NuGet package versions.
ci/tlk.ps1	Exports DAGENT_PLATFORM from the recipe target architecture.
ci/package-agent-windows.ps1	Adds mandatory -Architecture parameter and exports DAGENT_PLATFORM for the MSI build.
.gitignore	Ignores downloaded tun2socks.exe and wintun.dll.

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[CBenoit]

LGTM!