refactor: change cc_method from string to enum

[anujsinha3]

uw-ssec/codeuw#20

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (510ec6a) 75.08% compared to head (495457e) 75.39%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #256      +/-   ##
==========================================
+ Coverage   75.08%   75.39%   +0.30%     
==========================================
  Files          38       38              
  Lines        4355     4361       +6     
  Branches      591      591              
==========================================
+ Hits         3270     3288      +18     
+ Misses        942      931      -11     
+ Partials      143      142       -1     

Files	Coverage Δ
integration_tests/cc_stack_test.py	100.00% <100.00%> (ø)
src/noisepy/seis/correlate.py	77.98% <100.00%> (+1.11%)	⬆️
src/noisepy/seis/datatypes.py	94.23% <100.00%> (+0.09%)	⬆️
tests/test_main.py	100.00% <100.00%> (ø)
src/noisepy/seis/noise_module.py	43.42% <25.00%> (+1.02%)	⬆️

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