Factoring out task forward declerations.#6

Open

ScatteredRay wants to merge 4 commits intowestquote:mainfrom

ScatteredRay:indy_tasktypes

Commits on Mar 19, 2022

Initial cmake build support.
ScatteredRay
committed

Commits on Mar 21, 2022

CMake:Only use -fcoroutines for Clang builds.
ScatteredRay
committed

Commits on Mar 22, 2022

Additional cmake work, adding MSVC option arguments, and adding build samples.
ScatteredRay
committed
Factoring out forward decls into TaskTypes.h to minimize header dependiencies.
ScatteredRay
committed