Irregular polygons for LD2450 sensor

[npa-homeassistant]

Describe the problem you have/What new integration you would like

I am working with the LD2450 wwMwave sensor and the esphome component is working well. However, one quite restrictive limitation is that the zones are limited to rectangles. I know from previous repositories that this isn't a necessary restriction. It would be most helpful if this could be enhanced to allow irregular polygons to build zones which match room shapes.

Please describe your use case for this integration and alternatives you've tried:

Additional context