Use zigpy integer, enum, and bitmap types

[puddly]

Zigpy's types at this point have feature parity with zigpy-znp's so it's time to merge the two. This will also allow enum module breaking changes to be handled in a single place.

[codecov]

Codecov Report

Attention: 15 lines in your changes are missing coverage. Please review.

Comparison is base (e60c556) 98.52% compared to head (8a5bacd) 98.07%.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #225      +/-   ##
==========================================
- Coverage   98.52%   98.07%   -0.45%     
==========================================
  Files          43       43              
  Lines        3787     3694      -93     
==========================================
- Hits         3731     3623     -108     
- Misses         56       71      +15     

Files	Coverage Δ
zigpy_znp/commands/af.py	100.00% <100.00%> (ø)
zigpy_znp/commands/app_config.py	100.00% <100.00%> (ø)
zigpy_znp/commands/rpc_error.py	100.00% <100.00%> (ø)
zigpy_znp/commands/sys.py	100.00% <100.00%> (ø)
zigpy_znp/commands/ubl.py	100.00% <100.00%> (ø)
zigpy_znp/commands/util.py	100.00% <100.00%> (ø)
zigpy_znp/commands/zdo.py	100.00% <100.00%> (ø)
zigpy_znp/commands/znp.py	100.00% <100.00%> (ø)
zigpy_znp/types/commands.py	100.00% <100.00%> (ø)
zigpy_znp/types/cstruct.py	100.00% <100.00%> (ø)
... and 5 more

... and 1 file with indirect coverage changes

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