Add python 3.10 to tox and CI

[pdecat]

Hi,

I've opened this PR to reproduce some errors I am facing with python 3.10 when running tests.

All of them are like this one:

ERROR tests/test_xiaomi.py::test_xiaomi_battery[2985-118] - TypeError: Can't instantiate abstract class MockApp with abstract methods reset_network_info, send_packet

Note: python 3.10 is supported by Home Assistant since 2022/07, see https://www.home-assistant.io/blog/2022/07/06/release-20227/#improved-stability-and-performance-and-python-310

[coveralls]

Pull Request Test Coverage Report for Build 3165372359

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.04%) to 71.699%

---

Totals
Change from base Build 3139653088:	0.04%
Covered Lines:	5310
Relevant Lines:	7406

---

💛 - Coveralls

[codecov-commenter]

Codecov Report

Base: 71.66% // Head: 71.69% // Increases project coverage by +0.03% 🎉

Coverage data is based on head (d2adc08) compared to base (b8d8480).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #1797      +/-   ##
==========================================
+ Coverage   71.66%   71.69%   +0.03%     
==========================================
  Files         239      239              
  Lines        7396     7406      +10     
==========================================
+ Hits         5300     5310      +10     
  Misses       2096     2096              

Impacted Files	Coverage Δ
zhaquirks/tuya/__init__.py	54.05% <0.00%> (+0.16%)	⬆️
zhaquirks/tuya/mcu/__init__.py	51.66% <0.00%> (+0.27%)	⬆️
zhaquirks/xbee/__init__.py	42.85% <0.00%> (+1.39%)	⬆️

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