feat(CI/CD) add scripts

dev_server.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+# refresh env
+/bin/bash ./flush_env.sh
+
+# start frontend
+cd frontend;
+screen -S blog_frontend -d -m bun dev;
+cd ..;
+
+# start backend
+cd backend;
+screen -S blog_backend -d -m cargo r;
+cd ..;