feat(commands): watch for geonature_config.toml changes when dev_back running

[jacquesfize]

This PR propose to change geonature dev_back commands so it restart the flask service when the geonature_config.toml is edited

[camillemonchicourt]

And why not other config files in the same directory ?

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 83.95%. Comparing base (c5443bc) to head (48cd684).
Report is 1 commits behind head on develop.

Files with missing lines	Patch %	Lines
backend/geonature/core/command/main.py	75.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #3316   +/-   ##
========================================
  Coverage    83.94%   83.95%           
========================================
  Files          122      122           
  Lines         9719     9721    +2     
========================================
+ Hits          8159     8161    +2     
  Misses        1560     1560           

Flag	Coverage Δ
pytest	83.95% <75.00%> (+<0.01%)	⬆️

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[jacquesfize]

And why not other config files in the same directory ?

indeed !