Refactor: Move equipment price and mandatory status to Categorie relationship

- Created CategorieEquipement entity to act as a join table between Category and Equipment.
- Moved 'obligatoire' and 'prix' (formerly prixContribution) fields from Equipement to the new CategorieEquipement entity.
- Added Flyway migrations V14 and V15 to update the database schema and migrate existing data.
- Updated Categorie UI to use a select dropdown and price input for managing category-specific equipment configurations.
- Replaced 'equipement.obligatoire' and 'equipement.prixContribution' calls with their new category-level equivalents in logic and templates.
- Updated pricing calculation in Licence entity to source prices dynamically from the Categorie configuration.
- Updated Dotation generation logic to sync with category requirements automatically.

as-talange-web/src/main/java/com/astalange/web/controller/DotationController.java

@@ -38,7 +38,7 @@ public class DotationController {
         dotation.setNumero(numero);
         dotation.setFourni(fourni != null && fourni);
         
-        if (dotation.getEquipement().getObligatoire()) {
+        if (dotation.getLicence().getCategorie().isEquipementObligatoire(dotation.getEquipement().getId())) {
             dotation.setChoisi(true);
         } else {
             dotation.setChoisi(choisi != null && choisi);
@@ -70,7 +70,7 @@ public class DotationController {
             if (numero != null) dotation.setNumero(numero);
             if (flocage != null) dotation.setFlocage(flocage);
 
-            if (dotation.getEquipement().getObligatoire()) {
+            if (dotation.getLicence().getCategorie().isEquipementObligatoire(dotation.getEquipement().getId())) {
                 dotation.setChoisi(true);
             } else {
                 dotation.setChoisi(choisiParam != null);