Adding hook methods to the management command [WIP]

[batisteo]

No description provided.

[codecov-io]

Codecov Report

Merging #4 into develop will decrease coverage by 3.91%.
The diff coverage is 100%.

@@             Coverage Diff             @@
##           develop       #4      +/-   ##
===========================================
- Coverage    96.73%   92.81%   -3.92%     
===========================================
  Files           11       12       +1     
  Lines          153      167      +14     
===========================================
+ Hits           148      155       +7     
- Misses           5       12       +7

Impacted Files	Coverage Δ
...eline_logger/management/commands/report_mailing.py	100% <100%> (ø)	⬆️
timeline_logger/admin.py	0% <0%> (ø)

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