This PR updates the post-merge git hook, which executes pnpm install (now with --frozen-lockfile flag) in order to speed it up. See https://pnpm.io/cli/install#--frozen-lockfile for details.
This replaces all `nx` commands with `turbo` commands and removes Nx from the repository. All of the `project.json` files have been removed and any commands that broke with Turborepo have been adjusted.