build: add script that waits for local-setup to be ready

scripts/wait.py

@@ -0,0 +1,38 @@
+import time
+
+import os
+import sys
+
+
+def is_node_ready(w3):
+    try:
+        w3.zksync.get_block_number()
+        return True
+    except Exception as _:
+        return False
+
+
+def wait_for_node():
+    print("Waiting for node to be ready")
+    from zksync2.module.module_builder import ZkSyncBuilder
+
+    max_attempts = 30
+    w3 = ZkSyncBuilder.build("http://localhost:3050")
+
+    for i in range(max_attempts):
+        if is_node_ready(w3):
+            print("Node is ready")
+            return
+        time.sleep(20)
+    raise Exception("Maximum retries exceeded.")
+
+
+if __name__ == '__main__':
+    current_directory = os.path.dirname(os.path.abspath(__file__))
+    parent_directory = os.path.join(current_directory, '..')
+    sys.path.append(parent_directory)
+    try:
+        wait_for_node()
+    except Exception as e:
+        print(f"Error: {e}")
+    sys.path.remove(parent_directory)