Created the DependencyService service in the Libraries package.

Libraries/Package.swift

@@ -8,11 +8,16 @@ let package = Package(
     products: [
         .library(
             name: "Libraries",
-            targets: ["APIService"]),
+            targets: [
+                "APIService",
+                "DependencyService"
+            ]
+        ),
     ],
     dependencies: [],
     targets: [
         .target(name: "APIService"),
+        .target(name: "DependencyService"),
         .testTarget(
             name: "APIServiceTests",
             dependencies: ["APIService"]