Add shadcn/ui dropdown menu component

Author: cte

webview-ui/.storybook/main.ts

@@ -2,12 +2,7 @@ import type { StorybookConfig } from "@storybook/react-vite"
 
 const config: StorybookConfig = {
 	stories: ["../src/**/*.mdx", "../src/**/*.stories.@(js|jsx|mjs|ts|tsx)"],
-	addons: [
-		"@storybook/addon-onboarding",
-		"@storybook/addon-essentials",
-		"@chromatic-com/storybook",
-		"@storybook/addon-interactions",
-	],
+	addons: ["@storybook/addon-essentials", "@storybook/addon-interactions"],
 	framework: {
 		name: "@storybook/react-vite",
 		options: {},