Create FEOL Classes in OpenROAD

[12562]

Add FEOL classes in OpenROAD.
OpenFASOC uses OpenROAD heavily for AMS design. To extend usage of OpenROAD to more customized layout generation of the designs, it would be necessary to add support of FEOL (Front End of Line) layers in OpenROAD. It could potentially use the odb format to store this information and eventually create shapes for active and passive devices.

[chetanyagoyal]

@msaligane should i close this issue, or should we assign this to Barry?

[msaligane]

It would be great to assign it to Barry. Thanks!

[chetanyagoyal]

@fangzhonglyu adding you to thread, maybe you can create a progress tracker here for quick lookup