Migrate the Ongoing Activities library to a new sub-library.

This is the first step to migrate the Ongoing Activities library from
wear-wear to it's own sublibrary: wear-ongoing. This helps minimize the
dependencies we bring in.

Test: Migrated.
RelNote: "Migrate the Ongoing Activities library to a new sub-library:
wear-ongoing."

Change-Id: I7c02947659bbf33c9b66757001eccfa225f4168f

diff --git a/settings.gradle b/settings.gradle
index df6e08b..a7f2b13 100644
--- a/settings.gradle
+++ b/settings.gradle

@@ -506,6 +506,7 @@
 includeProject(":wear:wear-complications-provider-samples", "wear/wear-complications-provider/samples", [BuildType.MAIN])
 includeProject(":wear:wear-input", "wear/wear-input", [BuildType.MAIN])
 includeProject(":wear:wear-input-testing", "wear/wear-input-testing", [BuildType.MAIN])
+includeProject(":wear:wear-ongoing", "wear/wear-ongoing", [BuildType.MAIN])
 includeProject(":wear:wear-phone-interactions", "wear/wear-phone-interactions", [BuildType.MAIN])
 includeProject(":wear:wear-remote-interactions", "wear/wear-remote-interactions", [BuildType.MAIN])
 includeProject(":wear:wear-tiles", "wear/wear-tiles", [BuildType.MAIN])