Add C2 model and optical response model structure improvement
Include the improved sensing function: C2 into pydarm for MCMC fitting and rearrange the optical response model structure for potential future model support.
Derivation of C2 model:
Fitting performance:
Residual comparison between current and C2 sensing model by Hsiang-Yu
Report generation:
LLO: 20240408T200652Z Current used in L1 front-end
LHO: 20240330T211519Z
Edited by Hsiang-Yu Huang