[FIX] Spectrum edited name

[Gautzilla]

🐳 What's up?

There was a bug where deserializing a Dataset would not keep the Data names: it supposed the names were still the default names, and tried to parse the timestamp from it, rather than using the timestamp stored in the serialized file.

It should now work properly:

ads = AudioDataset(
    ...
)

for idx, ad in enumerate(ads.data):
    ad.name = str(idx)
    
ads.write_json(folder)

for idx, ad in enumerate(AudioDataset.from_json(folder / f"{ads.name}.json").data):
    assert ad.name == str(idx)

🐠 Note

This PR closes #363

[coveralls]

coverage: 98.834% (+0.006%) from 98.828%
when pulling fda0f77 on Gautzilla:fix/spectrum-edited-name
into 23ef208 on Project-OSmOSE:main.