Add VIA support for Sofle Choc

[JellyTitan]

I'd like to add VIA support for the Sofle Choc. Since there's already a via folder on the QMK side, the config on the VIA side needs to be added. I didn't see any open PR's, so I went ahead and submitted one for the Sofle Choc: https://github.com/the-via/keyboards/pull/2139 All PR's are paused on VIA for December/January, so it'll sit for a bit.