add delta_wfe_around_time function

[mperrin]

@obi-wan76 This is the function I mentioned briefly in slack. Written a while ago but I hadn't yet had a chance to PR it.

Given any date (or date and time, in the usual string format), this returns the delta OPD between the two measurements around that time. This should make it relatively easy to make plots of the drifts corresponding to the times when you think you detect strain sensor steps.

[pep8speaks]

Hello @mperrin, Thank you for updating !

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Comment last updated at 2024-04-02 00:20:09 UTC

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.87%. Comparing base (2669f27) to head (229f978).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #826      +/-   ##
===========================================
+ Coverage    59.23%   59.87%   +0.64%     
===========================================
  Files           16       16              
  Lines         6839     6859      +20     
===========================================
+ Hits          4051     4107      +56     
+ Misses        2788     2752      -36     

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[obi-wan76]

This is great, thanks!