feat: 初始化 getskills 技能

添加 SKILL.md 文件，将 getskills 工具转换为标准技能格式

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

.history/package_20260321181553.json

@@ -0,0 +1,14 @@
+{
+    "name": "@workskills/getskill",
+    "version": "1.0.0",
+    "main": "index.js",
+    "description": "search skills, get skills, update skills",
+    "author": "workskills.store",
+    "license": "MIT",
+    "keywords": [
+        "openclaw,"
+    ],
+    "files": [
+        "index.js"
+    ] // 明确要发布的文件
+}