Add a section that explains how to run Tuist from Xcode (#1276)

website/markdown/docs/contribution/getting-started.mdx

@@ -49,3 +49,16 @@ To start working on the project, we can follow the steps below:
   title="Xcode"
   description="Xcode needs to be installed in your system. If not, you can install it from the macOS App Store. After the installation, open it once to accept some licenses and install some additional components."
 />
+
+## Run Tuist from Xcode
+
+You can run Tuist from Xcode like you'd do from your terminal.
+With the project opened in Xcode,
+edit the `tuist` scheme.
+In the **Arguments** tab inside the **Run** section specify the arguments that you'd like to pass to Tuist as shown in the screenshot below:
+
+![This screenshot shows how to configure the launch arguments that will be passed to tuist](./assets/launch-arguments.png)
+
+After that, change the **working directory** in the **options** section to point to the directory that contains the project:
+
+![This screenshot shows the run options where we can specify the working directory](./assets/working-directory.png)