Use new typescript bindings

[tjdevries]

In order get better iteration with the upstream cody repo, I've been working on generating bindings in typescript so that they can be consumed here.

Steps to move to this repo:

• Complete Typescript bindings PR (PR to be linked)
• Use bindings here to create a remote plugin that communicates with cody-agent
• Begin removing rust code - see if possible to completely remove in order to simplify future maintenance (yes, I'm aware of the irony of rewrite in typescript)

Ideally, this will result in very little changing for end users because they already need to have node to execute the binary and they are running the build command, so I can change that to instead build the new node package instead of rust.