New: Created External Api for MD Management (coscine/issues#313)

coscine/issues#313

src/Migrator/Migrations/Migration201910241600ResourceMetadata.cs

+using FluentMigrator;
+namespace Coscine.Database.Migration.Migrations
+{
+    //yyyymmddhhmm
+    [Migration(201910241600)]
+    public class Migration201910241600ResourceMetadata : FluentMigrator.Migration
+    {
+        public override void Down()
+        {
+            Delete.Column("ApplicationProfile").FromTable("Resources");
+            Delete.Column("FixedValues").FromTable("Resources");
+        }
+
+        public override void Up()
+        {
+            Alter.Table("Resources").AddColumn("ApplicationProfile").AsString(500).Nullable();
+            Alter.Table("Resources").AddColumn("FixedValues").AsString(5000).Nullable();
+        }
+    }
+}