BookmapAPI/python-api ? reverse-engineered prompt

Build me a Bookmap Python API project that lets someone create custom Bookmap indicators in Python and run them directly inside Bookmap, without needing a separate IDE setup. I want it to handle the normal addon lifecycle, so a script can start up, react when an instrument is enabled or disabled, and stay running until the addon is turned off.

It should make it easy to subscribe to market data for the selected instrument, especially order book depth, and include clear examples showing how to work with the instrument alias, pips, size multiplier, and how to convert Bookmap price and size levels into real values. Please include a few simple sample indicators or demo scripts in an examples area so a beginner can copy one and modify it.

Assume the user has the latest stable Bookmap and Python 3.6 or newer installed. Keep the setup beginner friendly, with comments and a short quick start. If anything is unclear, look up the current Bookmap Python API docs online.