Implement CognitoAuth

[mochipon]

Candy House has released great iOS/Android SDKs under the MIT license. In addition, they have published rich documentation compared to the Web API.

This PR implements CognitoAuth that can replace WebAPIAuth, although its use is not recommended. This authentication method requires not only API_KEY, but also CLIENT_ID. After authentication, pysesame3 communicates with the service in the way implemented in the SDK.

Again, this authentication method is not recommended. This only copies a small part of the SDK. At the moment, this authentication method is not available by default. If you want to use it, you need to specify it explicitly when you install this library: pip install pysesame3[cognito].

[codecov]

Codecov Report

Merging #15 (b41e952) into main (9a74886) will decrease coverage by 5.43%.
The diff coverage is 82.45%.

@@             Coverage Diff             @@
##              main      #15      +/-   ##
===========================================
- Coverage   100.00%   94.56%   -5.44%     
===========================================
  Files            8        8              
  Lines          275      368      +93     
===========================================
+ Hits           275      348      +73     
- Misses           0       20      +20     

Impacted Files	Coverage Δ
pysesame3/lock.py	78.94% <42.85%> (-21.06%)	⬇️
pysesame3/auth.py	92.30% <90.69%> (-7.70%)	⬇️
pysesame3/cloud.py	100.00% <100.00%> (ø)
pysesame3/const.py	100.00% <100.00%> (ø)
pysesame3/device.py	100.00% <100.00%> (ø)
pysesame3/history.py	100.00% <100.00%> (ø)

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