Enable testing on Github Actions

[aerorahul]

DESCRIPTION OF CHANGES:

The tests in Github Actions on this repo are broken.
This PR enables build and ctest of the ufs-utils on Github Actions with GCC 10 and Intel One API powered by spack.

This PR adds:

• dependencies of ufs-utils to be built via spack
• a workflow for GCC and Intel respectively that builds the dependencies with spack, caches them and then builds ufs-utils. If the build is successful, ctests are also run.

IMO, the staging and downloading of the test data can be significantly improved and caching can be leveraged so that every subsequent push or PR does not force downloading the test data if there has been no change. This can alleviate load on the servers hosting the test data (EMC FTP sites).

TESTS CONDUCTED:

The changes in this PR have no impacts on the use of ufs-utils on on-prem platforms. No tests were run on any of the NOAA platforms.

• Compile branch on all Tier 1 machines using Intel (Orion, Jet, Hera and WCOSS2).
• Compile branch on Hera using GNU.
• Compile branch in 'Debug' mode on WCOSS2.
• Run unit tests locally on any Tier 1 machine.
• Run relevant consistency tests locally on all Tier 1 machine.

Describe any additional tests performed.
Tests are added as part of github actions and they pass.

The deprecated tests from .github/workflows can be deleted but are left here for the repository maintainers.

DEPENDENCIES:

None

DOCUMENTATION:

None

ISSUE:

Fixes #668

CONTRIBUTORS (optional):

None

[aerorahul]

@arunchawla-NOAA FYI

[GeorgeGayno-NOAA]

Thanks, @aerorahul.