feat(turborepo): Go Implementation of Capnproto Hashing (#6110)
### Description
Moved Go hashing to Capnproto
### Testing Instructions
<!--
Give a quick description of steps to test your changes.
-->
Closes TURBO-1427
---------
Co-authored-by: Alexander Lyon <Alexander Lyon>
Co-authored-by: nicholaslyang <Nicholas Yang>
Co-authored-by: Chris Olszewski <Chris Olszewski>
