Add option to allow share to be downloaded

db/migration/20230310222612_add_download_to_share.go

@@ -0,0 +1,23 @@
+package migrations
+
+import (
+	"database/sql"
+
+	"github.com/pressly/goose"
+)
+
+func init() {
+	goose.AddMigration(upAddDownloadToShare, downAddDownloadToShare)
+}
+
+func upAddDownloadToShare(tx *sql.Tx) error {
+	_, err := tx.Exec(`
+alter table share
+	add downloadable bool not null default false;
+`)
+	return err
+}
+
+func downAddDownloadToShare(tx *sql.Tx) error {
+	return nil
+}