Add daemon to continuously process reportconfigs.
Add daemon to continuously process reportconfigs.

This also forces Kotlin to use the latest release, 1.3.72, and opts into
some experimental coroutine libraries. Before deploying to production,
we should be sure to remove any still-experimental library usage.

Change-Id: I48db9ddd49df375aec69a48fc6af706f79462865

world-federation-of-advertisers/common-jvm,world-federation-of-advertisers/common-jvm