CoopTask

MInor release 3.10.0 with ghostl moved to stand-alone Arduino library.

ghostl, incl. circular_queue, has been moved from multiple copy&paste inclusions in various repos into an own repo to use as separate library dependency

fix: typos

Revert refactoring from new operator to make_unique, due to C++11 default language conformance.

For compatibility with C++17 / non-C++20 code, drop the dependencies on C++20 concepts.