Add ROLE_INCARICATO, configure mail, and add booking visualization specs

- Add ROLE_INCARICATO authority (AuthoritiesConstants, authority.csv)
- Configure SMTP mail settings for dev and prod environments
- Add faIdCard icon to FontAwesome config
- Add feature spec for booking visualization and management by role

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/main/resources/config/application-prod.yml

@@ -43,10 +43,14 @@ spring:
   liquibase:
     contexts: prod
   mail:
-    host: localhost
-    port: 25
-    username:
-    password:
+    host: smtps.aruba.it
+    port: 465
+    username: noreply@bigc.it
+    password: Ungr@nb3l4n1m4l0
+    protocol: smtps
+    properties.mail.smtp:
+      auth: true
+      starttls.enable: true
   thymeleaf:
     cache: true