Hindcast Test: Conda python version

[ssolson]

• Uses python version correctly
  • fixes an incorrect python version setting from #311
• Installs MHKiT dependencies in conda build
  • (removes --no-deps flag)
• Use coverage actions instead of coverage CLI
  • some jobs were giving issues with the coverage CLI, coverage action fixed issues and is a more modular approach to coverage.
• Uses an updated coverage version with lcov support
  • to use the coverage action we need an lcov report. The default anaconda channel uses a very old version of coverage which I needed to set to the current version of coverage.
• Adds an environment.yaml file for conda environment install
  • this is clearer and cleaner approach which separates MHKiT environment packages from testing packages
  • This is also useful for conda users who want to create an MHKiT environment
• Special case for MacOS-latest (macos 14) and Py 3.8
  • Implemented solution: use homebrew to install netcdf and hdf5
  • Other options were use macos13 or drop python 3.8 support
• CI test job set-os logic modified to now run all OS on push to develop
  • previously ran only ubuntu-latest on push and PR,
  • this change keeps with the intention of fastest PR test runs but now on pushes we can check all OS and catch the issues this PR has been fixing sooner.

[ssolson]

@akeeste I am finalizing some clean up on this PR and if you are around this is ready for a review.

If you are not around I am going to merge this to get started on the 4+ hour hindcast tests