Adding a section on bottom quark Yukawa measurement

[talismanbrandi]

Hi everyone,

Bottom quark Yukawa measurements are being discussed more and more in the literature now and reaches out beyond the traditional Higgs to bb decays channel since other channels can also be accessed in the future colliders. With reference to PR #54, one can see that associated production of Higgs with a bottom quark pair can also become competitive. I would like to propose a separate section on bottom quark Yukawa measurements or renaming the section on Hbb so that other channels can be included for Yukawa measurement.

ref: https://arxiv.org/abs/2011.13945

Thanks
Ayan

ps. @matthewfeickert suggested a discussion might be useful for this.