Add facility availability configuration feature

Implement a comprehensive interface for administrators to configure facility opening hours and closures. The feature enables ADMIN and INCARICATO users to manage time-based availability using simple string time fields.

Key changes:
- Add StrutturaDisponibilitaConfig component with form and list view
- Use orarioInizio/orarioFine string fields for simplified time management
- Add INCARICATO role to authority enum
- Implement XOR validation for dataSpecifica vs giornoSettimana
- Add clock icon button to Struttura list for quick access
- Include comprehensive Italian translations

This implementation uses string-based time fields instead of Instant types, providing a simpler and more appropriate solution for managing recurring time slots.

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

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

src/main/webapp/app/shared/config/config.ts

@@ -9,6 +9,7 @@ import { faBars } from '@fortawesome/free-solid-svg-icons/faBars';
 import { faBell } from '@fortawesome/free-solid-svg-icons/faBell';
 import { faBook } from '@fortawesome/free-solid-svg-icons/faBook';
 import { faCloud } from '@fortawesome/free-solid-svg-icons/faCloud';
+import { faClock } from '@fortawesome/free-solid-svg-icons/faClock';
 import { faCogs } from '@fortawesome/free-solid-svg-icons/faCogs';
 import { faDatabase } from '@fortawesome/free-solid-svg-icons/faDatabase';
 import { faEye } from '@fortawesome/free-solid-svg-icons/faEye';
@@ -61,6 +62,7 @@ export function initFortAwesome(vue: App) {
     faBell,
     faBook,
     faCloud,
+    faClock,
     faCogs,
     faDatabase,
     faEye,