Add Verilog-chisel side by side Reference Page to Docs (#2323)

Co-authored-by: Shola Ogunkelu @Shorla
Co-authored-by: Megan Wachs <megan@sifive.com>
Co-authored-by: Deborah Soung <debs@sifive.com>

Completed as part of Outreachy Internship Dec 2021-March 2022.