Use native mapmaker

[keskitalo]

Make the TOAST native mapmaker the default in toast_satellite_sim.py and toast_ground_sim.py. madam can still be invoked with --madam but now the pipelines will run even without it. The TOAST mapmaker is still significantly slower in a head-to-head comparison but it is built to be more generic and will support templates that are not limited to 1/f noise models.

[tskisner]

Thanks for making the two example pipelines consistent, and for enabling the native mapmaker as the default. This will make benchmarking easier and enable destriping "out of the box" from PyPI packages.