Add support for Key Connector OTP and account migration (#1663)

Co-authored-by: Thomas Rittson <trittson@bitwarden.com>

util/MySqlMigrations/Migrations/DatabaseContextModelSnapshot.cs

@@ -1127,6 +1127,9 @@ namespace Bit.MySqlMigrations.Migrations
                         .HasMaxLength(32)
                         .HasColumnType("varchar(32)");
 
+                    b.Property<bool>("UsesKeyConnector")
+                        .HasColumnType("tinyint(1)");
+
                     b.HasKey("Id");
 
                     b.ToTable("User");