Introduce UI Components documentation (#1926)

* new contributor guide folder architecture

* update content pass 1

* Prepare UI component folder to receive componentns

* Add component doc example for button

* Fix broken links

* Fix broken links

* Fix images

docs/docs/start/getting-started.mdx

@@ -18,7 +18,7 @@ The signup is free.
 <ThemedImage sources={{light: "/img/light-sign-in.png", dark:"/img/dark-sign-in.png"}} style={{width:'100%', maxWidth:'800px'}}/>
 
 ### 2. Local
-If you're a developer and would like to experiment or contribute to the app, you can install Twenty on your local environment. Follow our [local setup](/developer/local-setup) guide to get started.  
+If you're a developer and would like to experiment or contribute to the app, you can install Twenty on your local environment. Follow our [local setup](/contributor/local-setup) guide to get started.  
 
 ### 3. Self-hosting
 We provide self-hosting options if you want greater control over your data and want to run the app on your own server. Right now, Docker containers are the only hosting option we support. However we are actively working on providing simple options to self-host Twenty.

docs/docs/start/overview.mdx

@@ -21,6 +21,6 @@ ___
 
 Contributions are what makes the open source community such an amazing place.  
 
-Code contributions through pull request are most welcome. See our [local setup guide](../developer/local-setup) to get started.
+Code contributions through pull request are most welcome. See our [local setup guide](../contributor/local-setup) to get started.
 
 You can also contribute by creating an issue to report a bug you've spotted, joining our discussions or writing documentation.