Added method to expose the mysql2 database connection

lib/DatabaseConnectionPool.js

@@ -91,6 +91,14 @@ class DatabaseConnectionPool {
 		return data;
 	}
 
+	/**
+	 * Expose the database connection pool
+	 * @type {Object}
+	 */
+	get pool() {
+		return this.#connectionPool;
+	}
+
 	/**
 	 * Close the connection to the database
 	 */