Fixed Examples, Added Examples CI.

[okBrian]

Description

Reduced Example Test cases and added to CI
Fixed examples
Fixed bugs breaking some of the examples

Currently skips these examples:
["2D_ibm_cfl_dt", "1D_sodHypo", "2D_viscous", "2D_laplace_pressure_jump", "2D_bubbly_steady_shock", "2D_advection", "2D_hardcodied_ic", "2D_ibm_multiphase"]

Fixes #474

To-do

• Add GH issue listing skipped example cases in CI, what it means for them to be currently "broken", and what you remember about why they are broken (NaN, tolerance, etc.). Include some possible paths to success (grid size? time step size? etc.)

Type of change

• New feature (non-breaking change which adds functionality)

Scope

• This PR comprises a set of related changes with a common goal

How Has This Been Tested?

• Github CI
• Locally on a Ubuntu VM with intel compilers, and my compiler with GCC 14.2

Test Configuration:

• What computers and compilers did you use to test this:

Checklist

• I have added comments for the new code
• I ran ./mfc.sh format before committing my code
• This PR does not introduce any repeated code (it follows the DRY principle)
• I cannot think of a way to condense this code and reduce any introduced additional line count

[sbryngelson]

Can be merged once CI passes + merge conflicts resolved.

[sbryngelson]

I opened a companion issue to fix the broken CI cases: #751 @okBrian