refactor(frontend): use* 関数の格納場所のフォルダ名を composables に変更 (#16004)

* refactor(frontend): use* 関数の格納場所を正式名称（composables）に変更

* migrate

* move useLoading

packages/frontend/src/components/MkReactionIcon.vue

@@ -10,7 +10,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <script lang="ts" setup>
 import { defineAsyncComponent, useTemplateRef } from 'vue';
-import { useTooltip } from '@/use/use-tooltip.js';
+import { useTooltip } from '@/composables/use-tooltip.js';
 import * as os from '@/os.js';
 
 const props = defineProps<{