feat(regions): implement world regions

[KilianTrunk]

No description provided.

[SlimDeluxe]

1. Since seeder runs before the country import, move the EU region seeding to the ImportCountries job, otherwise it's not doing anything, since countries do not yet exist.
2. Special region management should be inside the country. It should be done with the Relation manager. This replaces this resource:

[codecov-commenter]

Codecov Report

❌ Patch coverage is 88.14815% with 48 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.39%. Comparing base (07ad91e) to head (0512d88).

Files with missing lines	Patch %	Lines
...ament/Clusters/World/Resources/CountryResource.php	70.23%	25 Missing ⚠️
...lament/Clusters/World/Resources/RegionResource.php	92.85%	10 Missing ⚠️
src/Jobs/ImportCountries.php	92.00%	8 Missing ⚠️
src/Models/CountryInSpecialRegion.php	0.00%	2 Missing ⚠️
src/Policies/RegionPolicy.php	90.00%	2 Missing ⚠️
src/Models/Country.php	95.45%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main       #9      +/-   ##
============================================
+ Coverage     74.14%   81.39%   +7.25%     
- Complexity      109      161      +52     
============================================
  Files            20       25       +5     
  Lines           611     1016     +405     
============================================
+ Hits            453      827     +374     
- Misses          158      189      +31     

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[SlimDeluxe]

1. When adding a special region that the country is already in, a user-friendly validation error should be shown instead of the database constraint error.
2. EU (special region) is not shown in the country table filter. Maybe it's best to make a separate filter for special regions, to make it more clear. E.g. typing EU into the filter already returns many matches.
3. The special region does not show the assigned country count

4. See code comment

[SlimDeluxe]

Please merge recent changes from main and resolve the import script conflict.

[KilianTrunk]

looks like this commit made tests start failing

[SlimDeluxe]

@KilianTrunk ah sorry about that, please add eclipsephp/common to deps and it should work again.

[KilianTrunk]

@SlimDeluxe looks like an issue with the L12 & F4 testing support we added, can I try to fix it in this PR?

[SlimDeluxe]

We're not testing for F4, only L12. For F4 there's going to be code changes.
The problem seems to be that since Tuesday Filament stable is at 4.0. You have to modify this part to explicitly use 3.3.