[FEAT] add workforce cost into intervention model (#3824)

[juggler31]

Description

Related Issue

Checklist

• I have followed the guidelines in our Contributing document
• My code respects the Definition of done available in the Development section of the documentation
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes
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[cypress]

Passing run #7975 ↗︎

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Details:

Merge 0827795 into b514749...
Project: Geotrek-admin	Commit: 0e9fa682f5 ℹ️
Status: Passed	Duration: 02:05 💡
Started: Feb 13, 2024 1:07 PM	Ended: Feb 13, 2024 1:10 PM

Review all test suite changes for PR #3933 ↗︎

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (b514749) 98.34% compared to head (0827795) 98.34%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3933   +/-   ##
=======================================
  Coverage   98.34%   98.34%           
=======================================
  Files         294      294           
  Lines       22262    22263    +1     
=======================================
+ Hits        21894    21895    +1     
  Misses        368      368           

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