Add CI check for raw `!$acc` or `!$omp` directives.

[sbryngelson]

With #883 and the hopeful quick fix of #927, we can then add an extra linter to the source linter CI that checks the source code for any !$acc or !$omp directives. It should fail if it finds any, so we are forced to stick with the macro paradigm. It will presumably need to exclude the macro.fpp type files.

[Malmahrouqi3]

! grep -iR '!\$acc\|!\$omp' --exclude="parallel_macros.fpp" --exclude="syscheck.fpp" ./src/* will do the job. I placed random raw directives and they were caught.

[Malmahrouqi3]

| mfc: OK > (venv) Installation succeeded.
[Lint Source/Lint Source ] ✅ Success - Main Initialize MFC [1m2.473530356s]
[Lint Source/Lint Source ] ⭐ Run Main Lint the full source
[Lint Source/Lint Source ] ✅ Success - Main Lint the full source [3.918914682s]
[Lint Source/Lint Source ] ⭐ Run Main Looking for raw directives
| ./src/simulation/m_riemann_solvers.fpp: !$acc (create='[flux_gsrc_rsx_vf,flux_gsrc_rsy_vf,flux_gsrc_rsz_vf]')
[Lint Source/Lint Source ] ❌ Failure - Main Looking for raw directives [6.449387ms]
[Lint Source/Lint Source ] exit status 1
[Lint Source/Lint Source ] ⭐ Run Complete job
[Lint Source/Lint Source ] ✅ Success - Complete job
[Lint Source/Lint Source ] 🏁 Job failed
Error: Job 'Detect File Changes' failed

[sbryngelson]

great thanks we can use it once the kernels issue is taken care of

[sbryngelson]

closed by #930