feat: add priority mailbox delivery fields

[GravendeelJochem]

INT-1309

[codecov]

Codecov Report

❌ Patch coverage is 56.25000% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 53.24%. Comparing base (37f8e98) to head (b9e71e8).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...pmentOptions/fields/createPriorityDeliveryField.ts	33.33%	4 Missing ⚠️
...ps/admin/src/forms/helpers/isPackageTypeMailbox.ts	50.00%	2 Missing ⚠️
...forms/shipmentOptions/createShipmentOptionsForm.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #290   +/-   ##
=======================================
  Coverage   53.24%   53.24%           
=======================================
  Files         691      693    +2     
  Lines        9746     9762   +16     
  Branches      694      694           
=======================================
+ Hits         5189     5198    +9     
- Misses       3872     3879    +7     
  Partials      685      685           

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[joerivanveen]

De coverage is vrij laag en ik denk dat dit veld op zich wel makkelijk aan bestaande tests is toe te voegen? Of is er een bezwaar tegen?

[FreekVR]

Verder OK, maar zie de opmerking van Joeri, dat graag nog even checken