can select assignment group for assignments and quizzes

Management/Models/Local/LocalAssignment.cs

@@ -49,6 +49,7 @@ public record LocalAssignment
   public IEnumerable<RubricItem> Rubric { get; init; } = Array.Empty<RubricItem>();
   public DateTime? LockAt { get; init; }
   public DateTime DueAt { get; init; }
+  public string? LocalAssignmentGroupId { get; init; }
   public int PointsPossible { get; init; }
   public IEnumerable<string> SubmissionTypes { get; init; } = Array.Empty<string>();
 

Management/Models/Local/LocalQuiz.cs

@@ -11,6 +11,7 @@ public record LocalQuiz
   public DateTime DueAt { get; init; }
   public bool ShuffleAnswers { get; init; }
   public bool OneQuestionAtATime { get; init; }
+  public string? LocalAssignmentGroupId { get; init; }
   public int AllowedAttempts { get; init; } = -1; // -1 is infinite
   // public bool ShowCorrectAnswers { get; init; }
   // public int? TimeLimit { get; init; } = null;