add AsyncBasedSession.asyncio_coroutine to run asyncio coroutine in other thread

pywebio/session/asyncbased.py

@@ -194,6 +194,11 @@ class AsyncBasedSession(AbstractSession):
     def run_async(self, coro_obj):
         self.inactive_coro_instances.append(coro_obj)
 
+    async def asyncio_coroutine(self, coro):
+        """若会话线程和运行事件的线程不是同一个线程，需要用 asyncio_coroutine 来运行asyncio中的协程"""
+        res = await WebIOFuture(coro=coro)
+        return res
+
 
 class Task:
     @contextmanager