Add lecroy oscilloscope processing

[MattZur]

This extends processing functionality to the LeCroy oscilloscope range. This PR is specifically for the oscilloscope model LECROYWS4054HD.

The processing functions follow the structure of the wd1 processing but with different header reading. In the future all processing could be standardised with just individual header reading functions for each device. As it follows the same structure, the processing test is essentially the same as the wd1 decode test.

[MattZur]

This PR replaces #45

[jwaiton]

Looks good! Some relatively minor request + some questions.

Also, we need to remove that merge commit from the history, which shouldn't be too hard 🤞

[jwaiton]

csv's aren't BinaryIOs, they are TextIOWrapper type, as shown here:

>>> import csv
>>> with open('fake.csv', 'r') as f:
...     print(f)
...     print(type(f))
...
<_io.TextIOWrapper name='fake.csv' mode='r' encoding='UTF-8'>
<class '_io.TextIOWrapper'>

Saying that, the WD1 and WD2 readers when type-checked are _io.BufferedReader class. So this clearly needs to be fixed across the whole repo at some point.

[MattZur]

Swapped it as you pointed out. Should I open an issue?

[jwaiton]

Sure :)

[MattZur]

Opened #84

[jwaiton]

align the :s, add an output type (def func(x : int, y : float) -> float)

[MattZur]

Fixed like this:

def get_batch(reader        :   '_csv.reader',
              batch_size    :   int) -> list: 

[jwaiton]

This PR introduces lecroy oscilloscope processing into MULE! Very exciting day, expanding beyond CAEN decoding.

Good work!