Reader for Oxford Instruments master pattern

[hakonanes]

Description of the change

Implements #705, a reader for master patterns in *.sdf5 files created with Oxford Instruments MapSweeper.

Progress of the PR

• Docstrings for all functions
• Unit tests with pytest for all lines
• Clean code style by running black via pre-commit
• Complete tests
• Address problem of different alignments of crystal axes to Cartesian coordinates (orix.crystal_map.Phase assumes x||a and z||c*, but OI uses x||a* anc z||c, for hexagonal at least; this point means the PR may take a while..., as it requires changes in orix).

Minimal example of the bug fix or new feature

Can read dynamical, two-beam, or kinematic simulations from the file

>>> import kikuchipy as kp
>>> s = kp.load("data.sdf5", hemisphere="upper", simulation="dynamical")
>>> s
<EBSDMasterPattern, title: data, dimensions: (|1001, 1001)>

For reviewers

• The PR title is short, concise, and will make sense 1 year later.
• New functions are imported in corresponding __init__.py.
• New features, API changes, and deprecations are mentioned in the unreleased
  section in CHANGELOG.rst.
• New contributors are added to kikuchipy/__init__.py and .zenodo.json.