Add three plots with stellar birth temperatures

[EvgeniiChaikin]

Example here: https://swift.dur.ac.uk/COLIBREPlots/chaikin/comparisons/YEAR2023/z0.0_L25N376_weak_SN_and_AGN_feedback/index.html

[EvgeniiChaikin]

Note that this PR follows https://github.com/SWIFTSIM/velociraptor-python/pull/106

[robjmcgibbon]

I just pushed a minor change to address this comment by Joop

[EvgeniiChaikin]

@robjmcgibbon I have added plots showing stellar birth pressures. This update follows https://github.com/SWIFTSIM/SOAP/pull/62 and https://github.com/SWIFTSIM/velociraptor-python/pull/107

Now for all stellar birth properties -- density, temperature, and pressure -- we plot

• the minimum value
• the maximum value
• the median value

These are plotted vs. stellar mass. I removed the plots vs. halo mass because otherwise we would have way too many plots.

[EvgeniiChaikin]

Sure!

Here is an example of a webpage that has the new plots: https://swift.dur.ac.uk/COLIBREPlots/chaikin/individual_runs/YEAR2023/z0.0_L25N188_test_birth_properties_Jan19/index.html