Tool xml2typescript

[studentutu]

We desperately need a tool to convert XML into typescript.
Specifically Doxygen XML ( based on Doxygen XML schema ) - see official opencv issue opencv/opencv#15306

An example is here - https://github.com/studentutu/opencv-wasm-node/tree/master/utils/doxygen_generated_docs

The issue has references to doxygen.ts which already describes XML schema and possible references for scaffolding of reading index.xml and translating it into a different format.