fix: adjust build for releases

[gerhardol]

add files added in the release/3.0 branch, required since GE4.0
Prepare for signing releases.

Also including the signing of the artifacts, for release/ branches

[mstv]

The .zip contains PackageManager.UI.runtimeconfig.json now. 👍

But there is a confusing message "Build was forcibly terminated" in the CI build log:

[INFO]: Do not sign artifacts from PR to release branch
Uploading artifact GitExtensions.PluginManager.3.1.1.260.nupkg (5,342,838 bytes)...100%
Uploading artifact GitExtensions.PluginManager.3.1.1.260.zip (5,340,153 bytes)...100%
Build was forcibly terminated
Build success

[gerhardol]

But there is a confusing message "Build was forcibly terminated" in the CI build log:

This is intentional, I tool this from the release branch - want to avoid special changes in release/

[mstv]

without deep knowledge

[gerhardol]

Initiated a signing, but called the branch release/3.1.0. The signed artifact should be used in a GH release

[mstv]

PackageManager.UI.exe needs the 32-bit .NET 9.0.9 runtime.
GitExtensions.PluginManager.dll needs the 32-bit .NET 8.0.20 runtime.
Do you want to change this yet?

Where should the plugin manager appear in GE?
I could not find it running https://ci.appveyor.com/api/buildjobs/rgmr9h3dtvi1bt8a/artifacts/combined.6.0.2.18242-unsigned.zip

v6.0.2:

Was better in v6.0.1:

[gerhardol]

GitExtensions.PluginManager.dll is built together with PackageManager.UI.exe and should use the same environment as GE. But 32-bit?
PM is installed in C:\Users<user>\AppData\Local\GitExtensions\UserPlugins\GitExtensions.PluginManager when running the 6.0.2 installer.
PM do not appear with the 6.0.2 build but with the .net10 I use