update pocketbase seeding,

002_source/pocketbase/pb_hooks/seed/004_clean_users.js

@@ -0,0 +1,14 @@
+module.exports = ($app) => {
+  console.log("004 clean user table start");
+
+  dirtyTruncateTable("Users");
+  dirtyTruncateTable("UserMetas");
+
+  console.log("004 clean user table done");
+};
+
+const dirtyTruncateTable = (COLLECTION_NAME) => {
+  console.log(`perform dirty method to truncate table "${COLLECTION_NAME}"`);
+  const cmd_to_exec = $os.cmd("sqlite3", "/pb_data/data.db", `DELETE from ${COLLECTION_NAME};`);
+  cmd_to_exec.output();
+};