Add pep8-naming rule to ruff

Ignore the `gui.py` file for now. There's lots of pep8-naming rules
being thrown for this, and some of them could result in API changes. Too
much to tackle at the moment.

Author: mfisher87

pyproject.toml

@@ -50,7 +50,24 @@ target-version = ["py38", "py39", "py310", "py311"]
 
 [tool.ruff]
 target-version = "py38"
-select = ["F", "E", "W", "C90", "I", "UP", "YTT", "B", "A", "C4", "T10", "RUF"]
+select = [
+  "F",
+  "E",
+  "W",
+  "C90",
+  "I",
+  "N",
+  "UP",
+  "YTT",
+  "B",
+  "A",
+  "C4",
+  "T10",
+  "RUF",
+]
+
+[tool.ruff.per-file-ignores]
+"viscm/gui.py" = ["N8"]
 
 [tool.ruff.mccabe]
 max-complexity = 11