Create global functions manager

[Janpot]

Extracting functions related logic out of the datasources and abstract it as a global project primitive.

Laying the groundwork for support for multiple files and extracting types. Replacing the childprocess with Node.js workerthreads. The code is more stable and easier to understand. There are two abstractions now:

1. the builder that scans the resources folder for function files and builds a commonjs file for it
2. the dev runtime worker, which gets restarted when the environment changes, and which runs requests for any of the functions