chore(README): add contribution guide

Resolves #3757

Author: benjamincanac

README.md

@@ -104,6 +104,17 @@ app.mount('#app')
 
 Learn more in the [installation guide](https://ui.nuxt.com/getting-started/installation/vue).
 
+## Contribution
+
+Thank you for considering contributing to Nuxt UI. Here are a few ways you can get involved:
+
+- Reporting Bugs: If you come across any bugs or issues, please check out the reporting bugs guide to learn how to submit a bug report.
+- Suggestions: Have any thoughts to enhance Nuxt UI? We'd love to hear them! Check out the [contribution guide](https://ui.nuxt.com/getting-started/contribution) to share your suggestions.
+
+## Local Development
+
+Follow the docs to [set up your local development environment](https://ui.nuxt.com/getting-started/contribution#local-development) and contribute.
+
 ## Credits
 
 - [nuxt/nuxt](https://github.com/nuxt/nuxt)