db optimizations around names and case-sensitivity (#2749)

* generate (case-insensitive) unique names for fields that should be unique

* move name case-insensitivity down to schema level

* update changelog

ErsatzTV.Infrastructure/Data/Configurations/ChannelConfiguration.cs

@@ -13,6 +13,10 @@ public class ChannelConfiguration : IEntityTypeConfiguration<Channel>
         builder.HasIndex(c => c.Number)
             .IsUnique();
 
+        builder.Property(c => c.Name)
+            .HasMaxLength(50)
+            .HasColumnType("varchar(50)");
+
         builder.Property(c => c.IsEnabled)
             .HasDefaultValue(true);