Add pyupgrade and autoflake8

[puddly]

Also move all remaining tool config into pyproject.toml.

[codecov-commenter]

Codecov Report

Merging #140 (8d2b349) into dev (b095b6f) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##              dev     #140      +/-   ##
==========================================
- Coverage   98.59%   98.59%   -0.01%     
==========================================
  Files          44       44              
  Lines        3918     3913       -5     
==========================================
- Hits         3863     3858       -5     
  Misses         55       55              

Impacted Files	Coverage Δ
zigpy_znp/api.py	96.80% <ø> (-0.01%)	⬇️
zigpy_znp/types/basic.py	100.00% <ø> (ø)
zigpy_znp/types/named.py	100.00% <ø> (ø)
zigpy_znp/zigbee/application.py	95.84% <ø> (-0.02%)	⬇️
zigpy_znp/types/commands.py	100.00% <100.00%> (ø)

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