Use (S)CSS setup from @worpress/scripts

[MAILPOET-5015]

packages/js/components/src/dummy/index.tsx

@@ -1,3 +1,5 @@
+import styles from './style.module.scss';
+
 export function Dummy(): JSX.Element {
-  return <div>Dummy component</div>;
+  return <div className={styles.dummy}>Dummy component</div>;
 }

packages/js/components/src/dummy/style.module.scss

@@ -0,0 +1,3 @@
+.dummy {
+  color: red;
+}

packages/js/components/src/global.d.ts

@@ -0,0 +1,2 @@
+declare module '*.module.css';
+declare module '*.module.scss';

packages/js/components/src/index.ts

@@ -1 +1,3 @@
+import './style.scss';
+
 export * from './dummy';