feat: add maintain stock item video guide

Author: ngyinze

docs/quick-start/stock/stock-item/intro.md

@@ -11,10 +11,15 @@ import {TOC} from '@src/components/toc.js';
 
 <TOC
 dataEntryList = {[
+{
+  "text": "Maintain Stock Item",
+  "link": "./maintain-stock-item",
+  "videoId": "jLr_-xhueIA"
+},
 {
   "text": "Batch Update Classifiation Code in Stock Item",
   "link": "../e-invoice/batch-update-classification-code",
   "videoId": "DxG6Okbn3e4"
 }
 ]}
-/>
+/>

docs/quick-start/stock/stock-item/maintain-stock-item.md

@@ -0,0 +1,17 @@
+---
+sidebar_position: 1
+title: Maintain Stock Item
+description: How to maintain stock item in SQL Accounting
+slug: /quick-start/stock/maintain-stock-item
+tags: ["Stock"]
+hide_title: true
+hide_table_of_contents: true
+sidebar_class_name: hidden-sidebar-items
+---
+
+import '@src/css/sidebar.css';
+import { YtLayout } from '@src/components/yt-layout';
+
+<YtLayout
+    videoId="jLr_-xhueIA"
+/>