Expand explanations on PDM

Co-authored-by: Lukasz Sobczuk <sobczuk.lukasz@wp.pl>

Python.gitignore

@@ -102,6 +102,14 @@ ipython_config.py
 #poetry.lock
 
 # pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
 #   pdm stores project-wide configurations in .pdm.toml, and it is recommended to not include it
 #   in version control.
 #   https://pdm.fming.dev/#use-with-ide