feat(commercial) : types d'adresse Courtier et Distributeur (ERP-119)

Ajoute deux types d'adresse autonomes (exclusifs, comme la Prospection) :
- back : colonnes is_broker / is_distributor sur client_address (migration
  modulaire, append + 2 CHECK miroir d'exclusivite + COMMENT ON COLUMN),
  proprietes ClientAddress (getters Groups + SerializedName), Callback
  validateExclusiveAddressTypes, validateAddressTypeRequired etendue,
  catalogue des commentaires SQL mis a jour.
- front : type AddressType (+broker/distributor), drapeaux, mappers, option
  du select Type d'adresse, labels i18n, payloads create/edit et lecture.
- tests back (acceptation + exclusivite + contrat de serialisation) et front.

frontend/modules/commercial/utils/clientEdit.ts

@@ -210,6 +210,8 @@ export function buildAddressPayload(
         isProspect: address.isProspect,
         isDelivery: address.isDelivery,
         isBilling: address.isBilling,
+        isBroker: address.isBroker,
+        isDistributor: address.isDistributor,
         country: address.country,
         postalCode: address.postalCode || null,
         city: address.city || null,