chore: Configure Husky, Commitlint, and Lint-staged to enforce Git commit message conventions and run pre-commit checks.

.lintstagedrc.js

@@ -0,0 +1,11 @@
+const path = require('path');
+
+const buildEslintCommand = (filenames) =>
+  `next lint --fix --file ${filenames
+    .map((f) => path.relative(process.cwd(), f))
+    .join(' --file ')}`;
+
+module.exports = {
+  '*.{js,jsx,ts,tsx}': [buildEslintCommand, 'prettier --write'],
+  '*.{json,md,css,scss}': ['prettier --write'],
+};