feat: Enhance reference validation and add support for Handle URLs

- Updated reference validation to handle various identifier types including DOI, ISBN, ISSN, URN, and Handle.
- Improved regex patterns for DOI and Handle validation to correctly extract and validate identifiers from URLs.
- Added asynchronous checks to verify the existence of DOI and Handle URLs.
- Added asynchronous checks to verify the existence of  ISBNs
- Included detailed comments explaining the regex patterns and validation logic.
- Adjusted the validation logic to handle any URL prefix for Handle identifiers.
- Ensured that the Handle format `handle/20.500.12854/36478` is correctly validated.
- Updated the CI workflow to trigger on push and pull request events.

database/migrations/config_2_backupcodes_table.ts

@@ -0,0 +1,55 @@
+// node ace make:migration backupcodes
+import { BaseSchema } from '@adonisjs/lucid/schema';
+
+export default class extends BaseSchema {
+    protected tableName = 'backupcodes';
+
+    async up() {
+        this.schema.createTable(this.tableName, (table) => {
+            table.increments('id');
+
+            table.integer('user_id').unsigned();
+            table.string('code', 64).notNullable();
+            table.boolean('used').defaultTo(false);
+
+            table.foreign('user_id').references('id').inTable('accounts').onUpdate('CASCADE').onDelete('CASCADE');
+
+            table.index('user_id', 'backupcodes_uid');
+        });
+    }
+
+    async down() {
+        this.schema.dropTable(this.tableName);
+    }
+}
+
+// CREATE SEQUENCE IF NOT EXISTS gba.backupcodes_id_seq
+//     INCREMENT 1
+//     START 1
+//     MINVALUE 1
+//     MAXVALUE 2147483647
+//     CACHE 1;
+
+// ALTER SEQUENCE gba.backupcodes_id_seq
+//     OWNER TO tethys_admin;
+
+// GRANT ALL ON SEQUENCE gba.backupcodes_id_seq TO tethys_admin;
+
+// GRANT USAGE ON SEQUENCE gba.backupcodes_id_seq TO tethys_app;
+
+// CREATE TABLE IF NOT EXISTS gba.backupcodes
+// (
+//     id integer NOT NULL DEFAULT nextval('gba.backupcodes_id_seq'::regclass),
+//     user_id integer,
+//     code character varying(64) NOT NULL,
+// 	used boolean NOT NULL DEFAULT false,
+//     CONSTRAINT backupcodes_user_id_foreign FOREIGN KEY (user_id)
+//         REFERENCES gba.accounts (id) MATCH SIMPLE
+//         ON UPDATE CASCADE
+//         ON DELETE CASCADE,
+//     CONSTRAINT backupcodes_pkey PRIMARY KEY (id)
+// )
+
+// CREATE INDEX IF NOT EXISTS backupcodes_uid
+//     ON gba.backupcodes USING btree
+//     (user_id ASC);