refactor: apply CleanDDD strongly typed ID and add Deleted/RowVersion

- Convert CampaignId to partial record implementing IGuidStronglyTypedId
- Add PointsAccountId as IInt64StronglyTypedId with Snowflake ID generation
- Add Deleted and RowVersion to MemberEntity and PointsAccount
- Update PointsAccountEntityTypeConfiguration to use SnowFlakeValueGenerator

BREAKING CHANGE: PointsAccount now uses PointsAccountId (long) instead of plain long

src/Fengling.Activity.Domain/ValueObjects/CampaignId.cs

@@ -1,18 +1,9 @@
 namespace Fengling.Activity.Domain.ValueObjects;
 
-public class CampaignId : IEquatable<CampaignId>
+public partial record CampaignId : IGuidStronglyTypedId
 {
-    public Guid Value { get; }
-
-    private CampaignId(Guid value) => Value = value;
-
-    public static CampaignId New() => new(Guid.NewGuid());
-    public static CampaignId FromGuid(Guid value) => new(value);
-    public static CampaignId Parse(string value) => new(Guid.Parse(value));
-
-    public bool Equals(CampaignId? other) => other?.Value == Value;
-    public override bool Equals(object? obj) => obj is CampaignId other && Equals(other);
-    public override int GetHashCode() => Value.GetHashCode();
+    public static CampaignId New() => new CampaignId(Guid.NewGuid());
+    public Guid Value => this;
     public static implicit operator Guid(CampaignId id) => id.Value;
-    public override string ToString() => Value.ToString();
+    public static implicit operator CampaignId(Guid value) => new CampaignId(value);
 }