Minor refactoring proposal

[sfendourakis]

I was trying to understand the recognize_song function and I saw some possible code improvements. Please note that I'm new to this codebase and I might have gotten things really wrong, so feel free to correct me if I'm wrong!
https://github.com/dotX12/ShazamIO/blob/17627a805c5ac228b9dab42521591ac494001d6a/shazamio/api.py#L347-L353
Here I believe the logic behind the check for signature_generator.input_pending_processing is already included following code
https://github.com/dotX12/ShazamIO/blob/17627a805c5ac228b9dab42521591ac494001d6a/shazamio/algorithm.py#L87-L89
so my proposal would be

 song = await get_song(data=data) 
 audio = self.normalize_audio_data(song) 
 signature_generator = self.create_signature_generator(audio) 
 signature = signature_generator.get_next_signature() 
  
 if signature is None: 
     return {"matches": []} 

https://github.com/dotX12/ShazamIO/blob/17627a805c5ac228b9dab42521591ac494001d6a/shazamio/api.py#L355-L358
Here is will never go inside the while loop since signature_generator.get_next_signature() always returns a DecodedMessage() instance or None for the case we covered above. So my proposal would be

 results = await self.send_recognize_request(signature) 
 return results 

https://github.com/dotX12/ShazamIO/blob/17627a805c5ac228b9dab42521591ac494001d6a/shazamio/algorithm.py#L103-L108
This code is also in the __init__ method of the class so it's already applied, it seems to me that it's not needed here. My proposal would be to keep it only in the __init__ method.

If you believe there is any value in any of these suggestions I can open a PR, else please feel free to completely ignore.
Thanks in advance for your time

[dotX12]

@sfendourakis, looks good, do a PR and I'll take a look at it :)
It is also desirable to add a couple of tests so that you can compare the old version and the new one. Because currently, test is only on one file.

[dotX12]

Better late than never, but it happened thanks to pyo3 and RUST.
https://github.com/dotX12/shazamio-core

Fixed in 0.5.0.
See comment: #76 (comment)