✨ Implements missing discard actions

[NCenerar]

Summary

Implements discard actions.
/closes #270
/closes #146

Preliminary checks

• I have read the Code of Conduct
• I have referenced above all issues related to the changes I'm bringing
• I have checked there is no other Pull Requests covering the same thing I'm about to address

New Features Submissions:

1. Does your submission pass tests?
2. Have you lint your code locally prior to submission?

Changes to Core Features:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your core changes, as applicable?
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[codecov]

Codecov Report

Merging #290 (5c4bbcb) into develop (fff0d70) will decrease coverage by 0.18%.
The diff coverage is 73.33%.

@@             Coverage Diff             @@
##           develop     #290      +/-   ##
===========================================
- Coverage    77.36%   77.18%   -0.19%     
===========================================
  Files            8        8              
  Lines          729      745      +16     
  Branches       121      120       -1     
===========================================
+ Hits           564      575      +11     
- Misses         130      135       +5     
  Partials        35       35              

Impacted Files	Coverage Δ
mail_deduplicate/action.py	55.55% <61.11%> (+0.55%)	⬆️
mail_deduplicate/deduplicate.py	75.26% <90.90%> (+0.53%)	⬆️
mail_deduplicate/cli.py	85.88% <100.00%> (ø)

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[kdeldycke]

Oh that's great! Thanks a lot @NCenerar for taking the time and effort for producing this PR! That's exactly the kind of code structure that was missing to have a complete implementation of actions.

I'm ready to merge it upstream.

[kdeldycke]

OK, I just fixed the merge conflict (due to other merged PRs). This PR is ready to be pushed upstream! :)

[NCenerar]

Glad to help ;)

[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.