feat: Migrate module build to vite

* Webpack emitted invalid ES module code, as it still contained `require` calls which
  are undefined on ES modules
* Build time is much shorter
* Built assets are much smaller (530 kB vs 930 kB)
* Remove unneeded import

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

.eslintrc.js

@@ -14,4 +14,11 @@ module.exports = {
 	plugins: [
 		'cypress',
 	],
+	parserOptions: {
+		babelOptions: {
+		  plugins: [
+				'@babel/plugin-syntax-import-assertions',
+		  ],
+		},
+	},
 }