Initial check-in of teamcity builds

Summary:
This includes the Kotlin scripts for teamcity builds as they
are currently setup on https://build.bitcoinabc.org

Test Plan: Merge, and set teamcity to use the configuration.

Reviewers: deadalnix, mbhinder, freetrader, #bitcoin_abc

Reviewed By: deadalnix, #bitcoin_abc

Subscribers: teamcity

Differential Revision: https://reviews.bitcoinabc.org/D744