[ADD] missing-timeout: Used when a method call an external request (#6780)

Calling external request needs to use timeout in order to avoid waiting for a long time

You can even reproduce the case using deelay.me

e.g.

```python
import requests
response = requests.get("https://deelay.me/5000/http://localhost:80")  # It will spend 5s

response = requests.get("https://deelay.me/5000/http://localhost:80", timeout=2)  # timeout

response = requests.get("https://deelay.me/1000/http://localhost:80", timeout=2)  # fine
```

After 2s if the request doesn't have response it raises the following exception
requests.exceptions.ReadTimeout: HTTPSConnectionPool(host='deelay.me', port=443): Read timed out. (read timeout=2)

But if it responses <=1s it is fine

Now you can test the same but using a bigger delay

1 files changed, 3 insertions, 0 deletions

diff --git a/doc/data/messages/m/missing-timeout/good.py b/doc/data/messages/m/missing-timeout/good.py
new file mode 100644
index 000000000..dbeb51255
--- /dev/null
+++ b/doc/data/messages/m/missing-timeout/good.py
@@ -0,0 +1,3 @@
+import requests
+
+requests.post("http://localhost", timeout=10)