feat: Add cross origin extension host

• VSCode Fork: feat: Proxy extHost load module through message... (gitlab-web-ide-vscode-fork!76 - merged)
• Web IDE: feat: Add cross origin extension host (!293 - merged)

Description

• Setting up cross origin extension host is necessary security step for the extension marketplace.
• This is behind a feature flag so that we can control from the Rails app when this is enabled.
• If this was enabled by default, it would break the Web IDE for self-managed customers that cannot reach to gitlab-static.net.

Screenshots

After this patch is applied 👇

diff --git a/packages/example/src/components/WebIde.vue b/packages/example/src/components/WebIde.vue
index 0b7b72f..fb67297 100644
--- a/packages/example/src/components/WebIde.vue
+++ b/packages/example/src/components/WebIde.vue
@@ -55,6 +55,9 @@ const getConfigFromExample = (exampleConfig: ExampleConfigClientOnly) => {
     telemetryEnabled,
     ref,
     auth: getAuthConfigFromExample(exampleConfig),
+    featureFlags: {
+      crossOriginExtensionHost: true,
+    },
   };
 };
 

Screenshots

Before	After