hyperdrive fits calibration solution support

[d3v-null]

Birli should be able to apply hyperdrive fits calibration solutions.

This will enable ASVO to provide properly calibrated visibilities.

It would be a good idea to ensure that preprocessing settings are written to the solutions file, so that Birli can check that those are valid / compatible with the preprocessing settings selected.

Same with ATTEN_DB: MWATelescope/mwa_hyperdrive#32