moved all constants in Unity in static class, resolved bugs in MO TA prioritized algorithm, changed ml agents Python packages to same release as Unity, updated readme

Added MOTA algorithm, test all algorithms with the newest python and unity editor version and their packages

first version of new Unity readme, taking care of issue #2, correcting bug in CanvasScript.cs, adding executable LKH for mac to Algorithm_TA_Prioritized

change action size to include unity_agent_id in code  and all algorithms in decentralized, improved README

now using taskID to assign tasks to robots, updated all algorithms in assigning tasks via the task side channel

removed prints, added elapsed time to stats, added canvas waiting for algorithm, optimized code, removed all configurable parameters to config files