refactor(client): use composition api

packages/client/src/components/avatars.vue

 <template>
 <div>
-	<div v-for="user in us" :key="user.id" style="display:inline-block;width:32px;height:32px;margin-right:8px;">
+	<div v-for="user in users" :key="user.id" style="display:inline-block;width:32px;height:32px;margin-right:8px;">
 		<MkAvatar :user="user" style="width:32px;height:32px;" :show-indicator="true"/>
 	</div>
 </div>
 </template>
 
-<script lang="ts">
-import { defineComponent } from 'vue';
+<script lang="ts" setup>
+import { onMounted, ref } from 'vue';
 import * as os from '@/os';
 
-export default defineComponent({
-	props: {
-		userIds: {
-			required: true
-		},
-	},
-	data() {
-		return {
-			us: []
-		};
-	},
-	async created() {
-		this.us = await os.api('users/show', {
-			userIds: this.userIds
-		});
-	}
+const props = defineProps<{
+	userIds: string[];
+}>();
+
+const users = ref([]);
+
+onMounted(async () => {
+	users.value = await os.api('users/show', {
+		userIds: props.userIds
+	});
 });
 </script>