[backend] Improve license management supporting official OIDs and grace period (#13840)

[richard-julien]

See #13840

[codecov]

Codecov Report

❌ Patch coverage is 82.35294% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 30.85%. Comparing base (35d74f0) to head (6eee350).

Files with missing lines	Patch %	Lines
.../opencti-graphql/src/modules/settings/licensing.js	82.35%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #13841   +/-   ##
=======================================
  Coverage   30.85%   30.85%           
=======================================
  Files        2910     2910           
  Lines      192273   192281    +8     
  Branches    39191    39193    +2     
=======================================
+ Hits        59328    59331    +3     
- Misses     132945   132950    +5     

Flag	Coverage Δ
opencti	30.85% <82.35%> (+<0.01%)	⬆️
opencti-front	2.46% <ø> (ø)
opencti-graphql	68.23% <82.35%> (-0.01%)	⬇️

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