chore: 调整目录结构

- 将Directus相关的组合式API移入composables/direcuts

app/composables/directus/index.ts

@@ -0,0 +1,2 @@
+export * from './useDirectusImage';
+export * from './useDirectusFiles';

app/composables/index.ts

@@ -0,0 +1,3 @@
+export * from './directus';
+export * from './useLocalizations';
+export * from './useMeilisearch';