fix(fastapi): centralize logging initialization

With this change, we provide a wrapper to `logging.getLogger`
in the `aurweb.logging` module. Modules wishing to log using
logging.conf should get their module-local loggers by calling
`aurweb.logging.getLogger(__name__)`, similar to `logging.getLogger`,
this way initialization with logging.conf is guaranteed.

Signed-off-by: Kevin Morris <kevr@0cost.org>

test/test_logging.py

@@ -0,0 +1,16 @@
+from aurweb import logging
+
+logger = logging.get_logger(__name__)
+
+
+def test_logging(caplog):
+    logger.info("Test log.")
+
+    # Test that we logged once.
+    assert len(caplog.records) == 1
+
+    # Test that our log record was of INFO level.
+    assert caplog.records[0].levelname == "INFO"
+
+    # Test that our message got logged.
+    assert "Test log." in caplog.text