Update to dotnet 9.0, add user roles, MatchStats and OpenApi/Scalar in dev

LaDOSE.Src/LaDOSE.Entity/Context/LaDOSEDbContext.cs

@@ -9,6 +9,7 @@ namespace LaDOSE.Entity.Context
     {
         public DbSet<Game> Game { get; set; }
         public DbSet<ApplicationUser> ApplicationUser { get; set; }
+        public DbSet<ApplicationRole> ApplicationRole { get; set; }
 
         public DbSet<Todo> Todo { get; set; }
 
@@ -49,6 +50,27 @@ namespace LaDOSE.Entity.Context
             base.OnModelCreating(modelBuilder);
 
 
+            #region Users and roles
+
+            // Maps onto the applicationrole / applicationuserrole tables that already exist
+            // in the schema. The join table is configured explicitly rather than as a
+            // many-to-many skip navigation so its columns are exactly userid + roleid,
+            // with the pair as the key and no surrogate id.
+            modelBuilder.Entity<ApplicationUserRole>(join =>
+            {
+                join.HasKey(ur => new { ur.UserId, ur.RoleId });
+
+                join.HasOne(ur => ur.User)
+                    .WithMany(u => u.UserRoles)
+                    .HasForeignKey(ur => ur.UserId);
+
+                join.HasOne(ur => ur.Role)
+                    .WithMany()
+                    .HasForeignKey(ur => ur.RoleId);
+            });
+
+            #endregion
+
             modelBuilder.Entity<Event>()
                 .HasMany(s => s.Tournaments);