Non-Circular Central Openings in SVT Endcap Discs

[rahmans1]

Right now, the central openings in the SVT Endcap Discs is perfectly circular. There is ongoing work on making the shape of the apertures more realistic while evaluating the tracking performances.

[rahmans1]

@ShujieL Could you link the relevant PR and presentations on this?

[rahmans1]

Relevant branch https://github.com/eic/epic/tree/si_disk_hole. I have rebased it against main. Please create a draft PR when ready @ShujieL