Add Rigaku HyPix 6000 datasets for multi-sweep image to indexing solution tests

[dagewa]

@biochem-fan pointed out some suitable datasets here: cctbx/dxtbx#653 (comment)

To do: look through these and find a reasonably small subset that can be added to dials-data in order to test multi-sweep indexing across different scan axes and $2\theta$ swings.

As discussed in a DIALS catch up, this would be a fairly long test, but it could be added to xia2 tests rather than DIALS. xia2 has a --regression-full option that can be used for long running tests.