chore: Rounding out logging

Did some
[reading](https://loguru.readthedocs.io/en/stable/resources/recipes.html#configuring-loguru-to-be-used-by-a-library-or-an-application)
and I was wrong to suggest setting up `loguru` in `__init__.py` so happy to use
`topofileforamts/logging.py`. Implemented the one recommendation in the above linked section. No tests for logging but
logs _are_ output.

.gitignore

@@ -123,6 +123,9 @@ dmypy.json
 # Pyre type checker
 .pyre/
 
+# Package version
+_version.py
+
 # VSCode
 .vscode/
 

topofileformats/__init__.py

@@ -1 +1,6 @@
-"""topofileformats."""
+"""A module for loading AFM files of different formats."""
+
+
+from loguru import logger
+
+logger.disable(__package__)

topofileformats/asd.py

@@ -26,6 +26,8 @@
     skip_bytes,
 )
 
+logger.enable(__package__)
+
 
 # pylint: disable=too-few-public-methods
 class VoltageLevelConverter: