Draft: Resolve "Introduce logging"

Closes #23

aleksis/apps/matrix/util/matrix.py

+import logging
 import time
 from json import JSONDecodeError
 from typing import Any, Optional
@@ -28,6 +29,7 @@ def get_headers() -> dict[str, str]:
 
 def do_matrix_request(method: str, url: str, body: Optional[dict] = None) -> dict[str, Any]:
     """Do a HTTP request to the Matrix Client Server API."""
+    logging.debug(f"Matrix request: {method} {url} {body}")
     while True:
         res = requests.request(method=method, url=build_url(url), headers=get_headers(), json=body)  # noqa: S113
 
@@ -41,8 +43,11 @@ def do_matrix_request(method: str, url: str, body: Optional[dict] = None) -> dic
 
         # If rate limit exceeded, wait and retry
         if data.get("errcode", "") == "M_LIMIT_EXCEEDED":
-            time.sleep(data["retry_after_ms"] / 1000)
+            wait_time = data["retry_after_ms"] / 1000
+            logging.debug(f"Rate limit exceeded, waiting {wait_time} seconds")
+            time.sleep(wait_time)
         else:
+            logging.error(f"Matrix request failed: {data}")
             raise MatrixException(data)
 
     return data