Add Blazor WebApp and rework data handling to utilize Entity Framework

Core/Entities/StudentEventRanking.cs

@@ -0,0 +1,12 @@
+namespace Core.Entities;
+
+public class StudentEventRanking
+{
+    public Student Student { get; set; } = null!;
+
+    public EventDefinition EventDefinition { get; set; } = null!;
+    public int Rank { get; set; }
+
+    public const int MaxRank = 6;
+
+}