🎨 Add black formatting

[ollyhensby]

Describe the upkeep / improvement you'd like to see
A lot of the modules are not formatting correctly with black. There are also some docstrings which are incomplete that either need removing or reviewing.

[jgunstone]

good idea -
I think we can also remove anywhere where we use the following also:

# %run _dev_maplocal_params.py
# %load_ext lab_black

can we wait until I've closed out #312 ?

[jgunstone]

@ollyhensby - maybe you could pick this up once #318 is merged?