Add-Service-Tests

[Agaba-derrick]

The ServicesTest class verifies the functionality of the Services class, responsible for initializing core components within the ODK application. Key tests include:

• Initialization on Creation: Confirms that the Services class initializes as expected upon creation.
• APK Display Name Retrieval: Verifies that the correct application name resource ID is returned using getApkDisplayNameResourceId().
• Singleton Access: Ensures the singleton instance _please_dont_use_getInstance() provides a non-null Context, indicating the singleton is set up correctly.

The custom ODKServiceTestRule manages setup and teardown operations before and after each test, maintaining a clean testing environment for service-level tests. This suite provides essential coverage for service initialization and singleton pattern checks.

Fixing odk-x/tool-suite-X#505
@wbrunette @Stryker101 @r0ssing