Support setting the energy levels with yaml input file for electron-energy-distribution type: Boltzmann-two-term

[BangShiuh]

As the title, the energy levels can be set with the yaml file for type Boltzmann-two-term. Setting the energy levels had no effect before in yaml file, and PlasmaPhase used only the default energy-levels. (The EEDF solver still use the default energy levels regardless.). One issue was that the initiation of the EEDF solver was not completed (it requires the collision cross-sections) at setting the energy levels. The update energy distribution function was triggered by setting the energy levels, and the EEDF solver failed. Therefore, the update energy distribution function cannot run when EEDF solver is not ready. One way is to check the number of collisions to know if the collisions have been loaded. Alternative is to add a function in EEDF solver to signal if it is ready.

Note that the example data is also being updated accordingly, Cantera/cantera-example-data#7. We can first merge this and the example nanosecond_pulse_discharge.py should pass. (The example should also pass without the source code change as the energy-levels data is not used at all.)

@speth @mquiram

• Add code to setParameters to read the energy levels.
• Add the guard to prevent update energy distribution for Boltzmann-two-term wihtout collision data.
• Update the test file.

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[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.34%. Comparing base (bd8f886) to head (97f9765).
⚠️ Report is 12 commits behind head on main.

Files with missing lines	Patch %	Lines
src/thermo/PlasmaPhase.cpp	66.66%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2080      +/-   ##
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+ Coverage   77.21%   77.34%   +0.13%     
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  Files         456      451       -5     
  Lines       52952    52500     -452     
  Branches     8966     8850     -116     
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- Hits        40885    40606     -279     
+ Misses       9041     8917     -124     
+ Partials     3026     2977      -49     

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