chore(commitlint): add config

.gitignore

@@ -30,6 +30,7 @@ share/python-wheels/
 .installed.cfg
 *.egg
 MANIFEST
+node_modules
 
 # PyInstaller
 #  Usually these files are written by a python script from a template

commitlint.config.js

@@ -0,0 +1,10 @@
+import { RuleConfigSeverity } from "@commitlint/types";
+
+// Config used by 'commitlint' GitHub action.
+// Rules: https://commitlint.js.org/reference/rules.html
+export default {
+  extends: ["@commitlint/config-conventional"],
+  rules: {
+    "header-max-length": [RuleConfigSeverity.Error, "always", 150], 
+  },
+};