feat: Add ClubMembershipCQ - Phase 3 Application Layer

- Implemented 3 Commands with handlers and validators:
  * ActivateClubMembership: Create/reactivate membership
  * DeactivateClubMembership: Deactivate existing membership
  * AssignClubFeature: Assign features to club members

- Implemented 3 Queries with handlers, validators, and DTOs:
  * GetClubMembership: Retrieve single membership by UserId
  * GetAllClubMemberships: List with filtering and pagination
  * GetClubMembershipHistory: Audit trail with full history

- All operations include history tracking via ClubMembershipHistory
- Property names aligned with Domain entity definitions
- 21 new files, ~600 lines of code
- Build successful with 0 errors

src/CMSMicroservice.Application/ClubMembershipCQ/Queries/GetClubMembership/ClubMembershipDto.cs

@@ -0,0 +1,16 @@
+namespace CMSMicroservice.Application.ClubMembershipCQ.Queries.GetClubMembership;
+
+/// <summary>
+/// DTO برای نمایش اطلاعات عضویت باشگاه
+/// </summary>
+public class ClubMembershipDto
+{
+    public long Id { get; set; }
+    public long UserId { get; set; }
+    public bool IsActive { get; set; }
+    public DateTime? ActivatedAt { get; set; }
+    public long InitialContribution { get; set; }
+    public long TotalEarned { get; set; }
+    public DateTimeOffset Created { get; set; }
+    public DateTimeOffset? LastModified { get; set; }
+}