[Node.js]: Make project back-compatible with node 18.x

[doc-han]

Description

xtensio currently requires node 20.x to run. Can we lower that to 18.x so that most people wouldn't have to change their node versions or use nvm in order to use our tool.

If we can do node 16.x that will be awesome even tho it has reached end of life

What to look for

1. Check the packages we depend on and the version of node they depend on. Also, if the package can be replaced by writing its functionality ourselves.
2. Check the internal node functions we depend on. Are they available in the version we want to support?