Refactor: begin reorganizing services dir.

- Renamed files and directories to reflect the new structure
- Moved comment-related services to the 'comments' directory
- Moved image-related services to the 'images' directory
- Moved like-related services to the 'likes' directory
- Moved post-related services to the 'posts' directory
- Moved user-related services to the 'users' directory

src/services/comments/BeerComment/getBeerCommentCount.ts

@@ -0,0 +1,13 @@
+import DBClient from '@/prisma/DBClient';
+
+interface GetBeerCommentCountArgs {
+  beerPostId: string;
+}
+
+const getBeerCommentCount = async ({
+  beerPostId,
+}: GetBeerCommentCountArgs): Promise<number> => {
+  return DBClient.instance.beerComment.count({ where: { beerPostId } });
+};
+
+export default getBeerCommentCount;