Capacity: Has softwares

[RomainLvr]

Q	A
Bug fix?	no
New feature?	yes
BC breaks?	no
Deprecations?	no
Tests pass?	yes
Fixed tickets	#number

[cedric-anne]

Some changes were merged in the main branch recently.

1. Each capacity should declare the relations to be cloned when an asset is clone. For the HasSoftwaresCapacity, you should declare them like this:

    public function getCloneRelations(): array
    {
        return [
            Item_SoftwareVersion::class,
            Item_SoftwareLicense::class,
        ];
    }

A test should also be added for this. See #16454 for some inspiration.

2. Each capacity should implement isUsed() and getCapacityUsageDescription() methods, see Warn user about data loss when capacities are disabled #16472. Your test class should now extends the Glpi\Tests\CapacityTestCase class and implement its abstracts methods.