Implement better dead time correction

[mdoucet]

Add better dead time correction.

The new correction applies a weight to each event upon loading so that the workflow doesn't have to change.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 88.00000% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 82.80%. Comparing base (fe4e351) to head (bac745e).

Files	Patch %	Lines
reduction/lr_reduction/event_reduction.py	84.21%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #30      +/-   ##
==========================================
- Coverage   82.91%   82.80%   -0.11%     
==========================================
  Files          20       20              
  Lines        2265     2257       -8     
==========================================
- Hits         1878     1869       -9     
- Misses        387      388       +1     

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[jmborr]

looks 👌