Add main function into dora-leyboard

node-hub/dora-keyboard/dora_keyboard/main.py

@@ -4,13 +4,16 @@ import pyarrow as pa
 from dora import Node
 
 
-node = Node()
+def main():
+    node = Node()
+    with keyboard.Events() as events:
+        while True:
+            event = events.get(1.0)
+            if event is not None and isinstance(event, Events.Press):
+                if hasattr(event.key, "char"):
+                    if event.key.char is not None:
+                        node.send_output("char", pa.array([event.key.char]))
 
 
-with keyboard.Events() as events:
-    while True:
-        event = events.get(1.0)
-        if event is not None and isinstance(event, Events.Press):
-            if hasattr(event.key, "char"):
-                if event.key.char is not None:
-                    node.send_output("char", pa.array([event.key.char]))
+if __name__ == "__main__":
+    main()