Add Single file archive method.

prisma/migrations/20240309180643_add_singlefile_archive_format/migration.sql

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+-- AlterEnum
+ALTER TYPE "LinksRouteTo" ADD VALUE 'SINGLEFILE';
+
+-- AlterTable
+ALTER TABLE "User" ADD COLUMN     "archiveAsSinglefile" BOOLEAN NOT NULL DEFAULT false;
+
+-- AlterTable
+ALTER TABLE "Link" ADD COLUMN     "singlefile" text;