New revised SOCRATES spectral files

[nichollsh]

Migrated from nichollsh/SOCRATES#14 (https://github.com/nichollsh/SOCRATES/issues/14)

As suggested in previous thread...

• O2
• PO, PN, PH3, PS
• CN, HCN
• SiH4 (https://arxiv.org/abs/2505.03200)
• SiO, SO2
• Fe, Na, K, H- (important opacities in vapourised atmospheres)
• OCS (https://www.science.org/doi/full/10.1126/sciadv.adp8105)
• N2O, CH3Cl, CH3Br, CH3OH, CH3SH, DMS (biosignatures)

Refer to available opacities here:
https://dace.unige.ch/opacity/
https://www.uv-vis-spectral-atlas-mainz.org/uvvis/

Could create these alongside updated continuum and with aerosol properties: #6, #2