Add new SpaLibTestUtils

This will contains the TestUtils.

Bug: 235727273
Test: Unit test
Change-Id: I38f4e635e39ef37e1436772c9f63b434a2c3005e
diff --git a/packages/SettingsLib/Spa/tests/Android.bp b/packages/SettingsLib/Spa/tests/Android.bp
index 2449dec..dcfc171 100644
--- a/packages/SettingsLib/Spa/tests/Android.bp
+++ b/packages/SettingsLib/Spa/tests/Android.bp
@@ -26,6 +26,7 @@
 
     static_libs: [
         "SpaLib",
+        "SpaLibTestUtils",
         "androidx.test.runner",
         "androidx.test.ext.junit",
         "androidx.compose.runtime_runtime",