Add Apps Script for syncing 판매용SW Package data to DB sheet

- clasp project bound to existing Google Sheet
- syncPackageToDB: maps columns between 판매용SW and DB sheets, updates matching rows by 보여질순서 key
- Handles merged 분야 column fill-down, 금액/연 calculation (단가×copy수)
- Highlights updated cells in yellow
- Includes listSheets utility and onOpen menu

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.clasp.json

@@ -0,0 +1,17 @@
+{
+  "scriptId": "1hdzYOiAg3WSvr3lzIX4ebgFro5zunXhMxcEqmugBWB7SegK3Xn7kKR6H",
+  "rootDir": "",
+  "parentId": "1FFoOU20EFhOBucfC3RoX6EPUHVdxRnkA4v1-DQtXnzU",
+  "scriptExtensions": [
+    ".js",
+    ".gs"
+  ],
+  "htmlExtensions": [
+    ".html"
+  ],
+  "jsonExtensions": [
+    ".json"
+  ],
+  "filePushOrder": [],
+  "skipSubdirectories": false
+}