feat: List domains user can see on homepage

src/db/user.rs

@@ -80,6 +80,10 @@ impl User {
     pub fn can_perform(&self, operation: &Operation) -> bool {
         self.role.can_perform(operation)
     }
+
+    pub fn can_create_domain(&self) -> bool {
+        self.role.can_perform(&Operation::CreateDomain)
+    }
 }
 
 impl fmt::Display for User {