fix(frontend): Export python code as string (#1339)

frontend/src/lib/init_scripts/python_init_code_trigger.ts

@@ -0,0 +1,14 @@
+export default `import wmill
+
+
+def main():
+    # A common trigger script would follow this pattern:
+    # 1. Get the last saved state
+    # const state = wnmill.get_state()
+    # 2. Get the actual state from the external service
+    # const newState = ...
+    # 3. Compare the two states and update the internal state
+    # wmill.setState(newState)
+    # 4. Return the new rows
+    # return range from (state to newState)
+    return [1, 2, 3]`