Convert To/From Esri Mobile Geodatabase and OGC GPKG GeoPackage SQLite databases

Question

Trying to find a method to convert Esri Mobile Geodatabase to GeoPackage Vector Features database both formats are SQLite database Esri uses ST_Geometry blob for the geometry and geopackage uses a derivative of WKB.
I don't want to have to use ArcGIS Pro or FME for this was looking for a console/command line tool or Python script.