Rename old C# backend folder

backend-C#/LeakyShipsAPI/Repositories/SessionRepository.cs

@@ -0,0 +1,26 @@
+using LeakyShipsAPI.Model;
+
+namespace LeakyShipsAPI.Repositories;
+
+public class SessionRepository : IRepository<Session>
+{
+    public ValueTask<Session> GetById(Guid id)
+    {
+        throw new NotImplementedException();
+    }
+
+    public bool Create(Session entity)
+    {
+        throw new NotImplementedException();
+    }
+
+    public bool Update(Session entity)
+    {
+        throw new NotImplementedException();
+    }
+
+    public bool Delete(Session entity)
+    {
+        throw new NotImplementedException();
+    }
+}