chore(commitlint): add `{body,footer,header}-max(-line)-length` [skip ci]

* Automated using https://github.com/myii/ssf-formula/pull/265

commitlint.config.js

@@ -1,3 +1,8 @@
 module.exports = {
     extends: ['@commitlint/config-conventional'],
+    rules: {
+        'body-max-line-length': [2, 'always', 120],
+        'footer-max-line-length': [2, 'always', 120],
+        'header-max-length': [2, 'always', 72],
+    },
 };