feat: move to cody agent binaries

[tjdevries]

[pjlast]

I think the current 0.0.5 release of the cody agent binary (at least for MacOS arm64) is broken. If I build the cody agent binary myself, it works, but the one on the releases page does not work.

Also, the health check needs to be updated to no longer check for cody-agent.js 🙃 (and do we still need the node runtime check? Not sure how that works here)

[tjdevries]

Not going to go this route, instead going to try and get the typescript bindings generated via cody and then add a remote plugin directly