Adding Custom Functionality

Hello all.

Obviously :) `opencv4nodejs` provides bindings for the core functionality of `opencv` and the various modules that are defined in `opencv_contrib`'.

I wanted to ask if it is possible to integrate a custom C++ library that supports a different `BackgroundSubtractor` into `opencv4nodejs`, specifically a subtractor that supports the "Independent Multi-Modal Background Subtractor".

See https://github.com/apennisi/imbs-mt

If it is possible, could you give some pointers on how this might be achieved - and of course anything that ends-up being produced will be contributed back into the project for the community to use.

Thanks.

Start by reviewing the opencv4nodejs bindings and the referenced imbs-mt library to determine how a custom BackgroundSubtractor could be integrated. Done would mean a supported integration of the Independent Multi-Modal Background Subtractor, with the resulting work contributed back to the project.

Written by the indexing model from the issue text.