feat(binaryfile): add head/budget file reversal script

[wpbonelli]

Close #2382. Also remove the need for tdis in the reversal methods by inferring period length etc from data headers.

[codecov]

Codecov Report

Attention: Patch coverage is 67.30769% with 17 lines in your changes missing coverage. Please review.

Project coverage is 75.9%. Comparing base (bb9824e) to head (2bd90a7).
Report is 13 commits behind head on develop.

Files with missing lines	Patch %	Lines
flopy/utils/binaryfile/reverse.py	0.0%	17 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##           develop   #2383     +/-   ##
=========================================
+ Coverage     68.4%   75.9%   +7.5%     
=========================================
  Files          294     295      +1     
  Lines        59390   61661   +2271     
=========================================
+ Hits         40652   46848   +6196     
+ Misses       18738   14813   -3925     

Files with missing lines	Coverage Δ
flopy/utils/binaryfile/__init__.py	86.3% <100.0%> (ø)
flopy/utils/binaryfile/reverse.py	0.0% <0.0%> (ø)

... and 228 files with indirect coverage changes