Extend addTargetPlatformVariant to optionally accept a feature name parameter

[jjohannes]

For example:

jvmDependencyConflicts {
  patch {
    module("org.lwjgl:lwjgl") {
      addTargetPlatformVariant("natives", "natives-linux", OperatingSystemFamily.LINUX, MachineArchitecture.X86_64)
      addTargetPlatformVariant("natives", "natives-linux-arm64", OperatingSystemFamily.LINUX, MachineArchitecture.ARM64)
      addTargetPlatformVariant("natives", "natives-macos", OperatingSystemFamily.MACOS, MachineArchitecture.X86_64)
      addTargetPlatformVariant("natives", "natives-macos-arm64", OperatingSystemFamily.MACOS, MachineArchitecture.ARM64)
      addTargetPlatformVariant("natives", "natives-windows", OperatingSystemFamily.WINDOWS, MachineArchitecture.X86_64)
      addTargetPlatformVariant("natives", "natives-windows-arm64", OperatingSystemFamily.WINDOWS, MachineArchitecture.ARM64)
    }
  }
}

Here, there is a Jar that is addressed normally org.lwjgl:lwjgl. This one is not target platform specific. Then there are multiple Jars all starting with the native- classifier. These are target platform specific.

With the above rule, a consumer should then be able to do:

implementation("org.lwjgl:lwjgl") // The Java classes
runtimeOnly("org.lwjgl:lwjgl") { capabilities { requireFeature("native") } } // The native code (target platform dependent)