feature(#6): this commit renames the static constant class

Author: https-richardy

Source/HttpsRichardy.Federation.Application/Handlers/Realm/RealmCreationHandler.cs

@@ -31,7 +31,7 @@ public async Task<Result<RealmDetailsScheme>> HandleAsync(
         var defaultRealm = matchingRealms.FirstOrDefault()!;
 
         realm.Permissions = defaultRealm.Permissions
-            .Where(permission => DefaultRealmPermissions.InitialPermissions.Contains(permission.Name))
+            .Where(permission => RealmPermissions.InitialPermissions.Contains(permission.Name))
             .ToList();
 
         await collection.InsertAsync(realm, cancellation: cancellation);