Revised SensorMapGeometryTransformer (now fully operable) and added corresponding tests. Added boxObj.buffer_mapXY() + test. Added type hints.

Added a tolerance to get_smallest_boxImYX_that_contains_boxMapYX() to avoid float coordinate rounding issues.

CI setup now updates ci_env environment installed via docker_pyenvs instead of creating an independent environment.

CI Python environment is not separate from the base env. Fixed mixed channels for gdal and libgdal causing libkea issue during CI.