Add CMixTrackServices function wrapper

Sources/XXClient/CMix/Functors/CMixTrackServices.swift

+import Bindings
+import XCTestDynamicOverlay
+
+public struct CMixTrackServices {
+  public var run: (TrackServicesCallback) -> Void
+  
+  public func callAsFunction(
+    callback: TrackServicesCallback
+  ) -> Void {
+    run(callback)
+  }
+}
+
+extension CMixTrackServices {
+  public static func live(_ bindingsCMix: BindingsCmix) -> CMixTrackServices {
+    CMixTrackServices { callback in
+      bindingsCMix.trackServices(callback.makeBindingsHealthCallback())
+    }
+  }
+}
+
+extension CMixTrackServices {
+  public static let unimplemented = CMixTrackServices(
+    run: XCTUnimplemented("\(Self.self)")
+  )
+}