Add user reservation form feature

- Created new user-friendly reservation form component (prenotazione-form-user)
- Added getCurrentUser() method to UtenteAppService
- Added route /prenotazione/nuova for user reservation form
- Added Italian translations for new UI elements
- Form includes booking details and auto-populated user data
- Radio button toggle for private/company data display
- Form validation with required facility selection
- Created comprehensive documentation in frontend-changes.md

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

.jhipster/UtenteApp.json

@@ -22,8 +22,8 @@
     {
       "fieldName": "ruolo",
       "fieldType": "Ruolo",
-      "fieldValidateRules": ["required"],
-      "fieldValues": "USER,INCARICATO,ADMIN"
+      "fieldValues": "USER,INCARICATO,ADMIN",
+      "fieldValidateRules": ["required"]
     },
     {
       "fieldName": "attivo",
@@ -74,11 +74,19 @@
   "name": "UtenteApp",
   "relationships": [
     {
+      "relationshipSide": "left",
+      "relationshipType": "one-to-one",
+      "otherEntityName": "user",
+      "relationshipName": "internalUser",
+      "otherEntityField": "login",
+      "relationshipWithBuiltInEntity": true
+    },
+    {
+      "relationshipSide": "right",
+      "relationshipType": "one-to-many",
       "otherEntityName": "liberatoria",
       "otherEntityRelationshipName": "utente",
-      "relationshipName": "liberatorie",
-      "relationshipSide": "right",
-      "relationshipType": "one-to-many"
+      "relationshipName": "liberatorie"
     }
   ],
   "searchEngine": "no",