Split API into multiple files & setup public user permissions

app/models/auth/PublicUser.model.js

@@ -94,6 +94,15 @@ class PublicUserModel extends User {
 
         return page
     }
+
+    async can(permission) {
+        const PublicUserPermission = this.models.get('auth:PublicUserPermission')
+        return PublicUserPermission.can(permission)
+    }
+
+    is_public_user() {
+        return true
+    }
 }
 
 module.exports = exports = PublicUserModel

app/models/auth/User.model.js

@@ -57,6 +57,9 @@ class User extends AuthUser {
     }
 
     // Other members and methods here
+    is_public_user() {
+        return false
+    }
 }
 
 module.exports = exports = User