Update: Overhaul PID handling

coscine/issues#1321

src/Migrations/Migrations/Migration202208181027ResourceDeletedColumn.cs

+using FluentMigrator;
+
+namespace Coscine.Migrations.Migrations
+{
+    //yyyymmddhhmm
+    [Migration(202208181027)]
+    public class Migration202208181027ResourceDeletedColumn : Migration
+    {
+        public override void Down()
+        {
+            Delete.Column("Deleted")
+                .FromTable("Resources");
+        }
+
+        public override void Up()
+        {
+            Alter.Table("Resources")
+                .AddColumn("Deleted")
+                .AsBoolean()
+                .NotNullable()
+                .WithDefaultValue(false);
+        }
+    }
+}
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