Scope plugin + update snapshots (#22)

* Scope plugin

* Update Playwright Snapshots

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Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: martinRenou

src/plugin.ts

@@ -11,7 +11,7 @@ import * as widgetExports from './index';
 
 import { MODULE_NAME, MODULE_VERSION } from './version';
 
-const EXTENSION_ID = 'bqplot-gl:plugin';
+const EXTENSION_ID = `@bqplot/bqplot-gl:plugin${MODULE_VERSION}`;
 
 /**
  * The bqlotGL plugin.