Add in-progress tutorial to how-to section

docs/docs/SUMMARY.md

@@ -97,6 +97,7 @@ search:
     - [Message Information](nats/message.md)
     - [How-To](howto/nats/index.md)
         - [DynaConf](howto/nats/dynaconf.md)
+        - [In-Progess](howto/nats/in-progress.md)
 - [Redis](redis/index.md)
     - [Pub/Sub](redis/pubsub/index.md)
         - [Subscription](redis/pubsub/subscription.md)

docs/docs/en/howto/nats/in-progress.md

@@ -0,0 +1,39 @@
+---
+# 0.5 - API
+# 2 - Release
+# 3 - Contributing
+# 5 - Template Page
+# 10 - Default
+search:
+  boost: 10
+---
+
+# In-Progress sender
+
+Nats Jetstream uses the at least once principle, so the message will be delivered until it receives the ACK status (even if your handler takes a long time to process the message), so you can extend the message processing status with a request
+
+??? example "Full Example"
+    ```python linenums="1"
+    import asyncio
+
+    from faststream import Depends, FastStream
+    from faststream.nats import NatsBroker, NatsMessage
+
+    broker = NatsBroker()
+    app = FastStream(broker)
+
+    async def progress_sender(message: NatsMessage):
+        async def in_progress_task():
+            while True:
+                await asyncio.sleep(10.0)
+                await message.in_progress()
+
+        task = asyncio.create_task(in_progress_task())
+        yield
+        task.cancel()
+
+    @broker.subscriber("test", dependencies=[Depends(progress_sender)])
+    async def handler():
+        await asyncio.sleep(20.0)
+
+    ```

docs/docs/navigation_template.txt

@@ -97,6 +97,7 @@ search:
     - [Message Information](nats/message.md)
     - [How-To](howto/nats/index.md)
         - [DynaConf](howto/nats/dynaconf.md)
+        - [In-Progess](howto/nats/in-progress.md)
 - [Redis](redis/index.md)
     - [Pub/Sub](redis/pubsub/index.md)
         - [Subscription](redis/pubsub/subscription.md)