ci: Add knip and remove unused devDependencies

knip.config.js

@@ -0,0 +1,38 @@
+const config = {
+	/**
+	 * We only need dependency checking at the moment,
+	 * so all checks except for dependencies are turned off.
+	 */
+	rules: {
+		files: "off",
+		duplicates: "off",
+		unlisted: "off",
+		binaries: "off",
+		unresolved: "off",
+		catalog: "off",
+		exports: "off",
+		types: "off",
+		enumMembers: "off",
+	},
+
+	ignoreDependencies: [
+		/**
+		 * Used inside the tutorial steps and required for UI5 CLI setup
+		 */
+		"ui5-middleware-livereload",
+		"ui5-middleware-serveframework",
+		"ui5-middleware-simpleproxy",
+		"ui5-tooling-transpile",
+		"@types/openui5",
+		"@ui5/ts-interface-generator",
+
+		/**
+		 * Used for the local developmet setup (see tools/dev-server/ghpage-template.hbs)
+		 */
+		"@highlightjs/cdn-assets",
+		"anchor-js",
+		"github-markdown-css",
+	],
+};
+
+export default config;