feat: add default user icon and participant list entry component

src/components/custom-ui/participant-list-entry.tsx

@@ -0,0 +1,19 @@
+import React from 'react';
+import Image from 'next/image';
+import { defaultusericon } from '@/assets/usericon/default/defaultusericon-export';
+
+type ParticipantListEntryProps = {
+  participant: string;
+  imageSrc?: string;
+};
+
+export default function ParticipantListEntry({
+  participant,
+}: ParticipantListEntryProps) {
+  return (
+    <div className='flex items-center gap-2 py-1 ml-5'>
+      <Image src={defaultusericon} alt='Avatar' width={30} height={30} />
+      <span>{participant}</span>
+    </div>
+  );
+}