Add SetDashboardURL function wrapper

Sources/XXClient/Functions/SetDashboardURL.swift

+import Bindings
+import XCTestDynamicOverlay
+
+public struct SetDashboardURL {
+  public var run: (String) -> Void
+
+  public func callAsFunction(baseURL: String) {
+    run(baseURL)
+  }
+}
+
+extension SetDashboardURL {
+  public static let live = SetDashboardURL { baseURL in
+    BindingsSetDashboardURL(baseURL)
+  }
+}
+
+extension SetDashboardURL {
+  public static let unimplemented = SetDashboardURL(
+    run: XCTUnimplemented("\(Self.self)")
+  )
+}