add logic to handle image imports in web-test-runner

src/Umbraco.Web.UI.Client/package.json

@@ -90,6 +90,7 @@
 		"@typescript-eslint/parser": "^5.50.0",
 		"@web/dev-server-esbuild": "^0.3.3",
 		"@web/dev-server-import-maps": "^0.0.7",
+		"@web/dev-server-rollup": "^0.3.21",
 		"@web/test-runner": "^0.15.0",
 		"@web/test-runner-playwright": "^0.9.0",
 		"babel-loader": "^9.1.2",
@@ -111,6 +112,7 @@
 		"prettier": "2.8.3",
 		"rollup": "^3.10.0",
 		"rollup-plugin-esbuild": "^5.0.0",
+		"rollup-plugin-url": "^3.0.1",
 		"tiny-glob": "^0.2.9",
 		"typescript": "^4.9.5",
 		"vite": "^4.0.4",