chore: add eslint support

Author: shakkernerd

packages/plugin-gitbook/eslint.config.mjs

@@ -0,0 +1,3 @@
+import eslintGlobalConfig from "../../eslint.config.mjs";
+
+export default [...eslintGlobalConfig];

packages/plugin-gitbook/package.json

@@ -20,6 +20,7 @@
     "scripts": {
         "build": "tsup --format esm --dts",
         "dev": "tsup --format esm --dts --watch",
-        "test": "vitest"
+        "test": "vitest",
+        "lint": "eslint --fix  --cache ."
     }
 }