Implement cooldown feature for nobility advancement

- Added logic in FalukantService to calculate the next available advancement date based on the user's last advancement.
- Updated the frontend to display a cooldown message indicating when the user can next advance in nobility.
- Enhanced the NobilityView component to handle and format the next advancement date appropriately.

backend/services/falukantService.js

@@ -2907,6 +2907,13 @@ class FalukantService extends BaseService {
             ],
             attributes: ['labelTr', 'level']
         });
+        let nextAdvanceAt = null;
+        if (falukantUser.lastNobilityAdvanceAt) {
+            const last = new Date(falukantUser.lastNobilityAdvanceAt);
+            const next = new Date(last.getTime());
+            next.setDate(next.getDate() + 7);
+            nextAdvanceAt = next.toISOString();
+        }
         const currentTitleLevel = nobility.level;
         const nextTitle = await TitleOfNobility.findOne({
             where: {
@@ -2922,7 +2929,8 @@ class FalukantService extends BaseService {
         });
         return {
             current: nobility,
-            next: nextTitle
+            next: nextTitle,
+            nextAdvanceAt
         };
     }