Add paging-testing artifact into Paging

Test: n/a
Bug: n/a
Relnote: New artifact to test Paging implementation
Change-Id: I004deb90d286b4955e68fea6948ca54ab703dfa5
diff --git a/settings.gradle b/settings.gradle
index 1c958ae..6a4c7c0 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -768,6 +768,7 @@
 includeProject(":paging:paging-rxjava2-ktx", [BuildType.MAIN])
 includeProject(":paging:paging-rxjava3", [BuildType.MAIN])
 includeProject(":paging:paging-samples", "paging/samples", [BuildType.MAIN, BuildType.COMPOSE])
+includeProject(":paging:paging-testing", [BuildType.MAIN])
 includeProject(":palette:palette", [BuildType.MAIN])
 includeProject(":palette:palette-ktx", [BuildType.MAIN])
 includeProject(":percentlayout:percentlayout", [BuildType.MAIN])