Add vaidika anusvaara candrabindu tiryak to Tiro Tamil?

[tiroj]

https://www.unicode.org/Public/UCD/latest/ucd/ScriptExtensions.txt
includes
A8F3 ; Deva Taml # Lo DEVANAGARI SIGN CANDRABINDU VIRAMA
Should this character be added to the Tiro Tamil font and, if so, what should it look like?

See also:
https://twitter.com/TiroTypeworks/status/1561818975729700864

[tiroj]

Example in use:

From: https://www.exoticindiaart.com/book/details/srividya-tamil-sanskrit-nzj896/