Add support for Gradle Task Caching

[mzgreen]

Currently Cockpit doesn't support Gradle Task Caching which causes that build takes more time. I suggest to add support for task caching: https://docs.gradle.org/current/userguide/build_cache.html?_ga=2.219831121.973550216.1580802978-1949218979.1568871414#task_output_caching

[martawoldanska]

Thanks for the idea! 💪