Add concurrent:concurrent-futures-ktx

Moves workmanager-ktx's ListenableFuture to kotlinx.coroutine compat
logic to a common module to be shared with a future change in paging to
support ListenableFuture

Test: ./gradlew concurrent:concurrent-futures-ktx:check
Change-Id: Ia919462fd3615b4707b2e5f7fe08cef560795bbe
diff --git a/settings.gradle b/settings.gradle
index aebfd08..63f87ac 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -97,6 +97,7 @@
 includeProject(":collection:collection", "collection/collection")
 includeProject(":collection:collection-ktx", "collection/collection-ktx")
 includeProject(":concurrent:concurrent-futures", "concurrent/futures")
+includeProject(":concurrent:concurrent-futures-ktx", "concurrent/futures-ktx")
 includeProject(":contentaccess", "contentaccess")
 includeProject(":contentpager", "contentpager")
 includeProject(":coordinatorlayout", "coordinatorlayout")