This tutorial (currently about 15 hrs. of content) is step by step creation of a custom template for starting your new projects. It will form a location where one can implement other desired inclusions that are learned from other sources. It implements the Gameplay Ability System as well as establishes the base classes in C++ for Enhanced Input and UI that listens to the GAS for updates.
I will add more to this custom template as I learn additional features. Stay Tuned!
https://dev.epicgames.com/community/learning/tutorials/1GGB/unreal-engine-custom-template