fix: create post

frontend/admin/src/api/postService.js

@@ -13,4 +13,14 @@ export const postService = {
     getPost(id) {
         return httpClient.get(`/admin/posts/${id}`);
     },
-};
+    createPost(post) {
+        return httpClient.post('/admin/posts', post);
+    },
+
+    updatePost(id, post) {
+        return httpClient.put(`/admin/posts/${id}`, post);
+    },
+    deletePost(id) {
+        return httpClient.delete(`/admin/posts/${id}`);
+    },
+}