Add optional columns for MC generated events about gamma-astro-data-formats

[maxnoe]

Also the required columns would need to be different, as most simulations won't have well-defined RA / DEC / TIME

[TarekHC]

I would say the most basic parameters would be MC_DETX, MC_DETY and MC_ENERGY, given that the main rationale to generate DL3 MC files will probably be effects over the FoV.

[kosack]

I suggest using the terminology true_x rather than mc_x which is jargon.