feat: migrate advanced skills (github, coding-agent, context7) to clawgo

skills/context7/SKILL.md

@@ -0,0 +1,19 @@
+---
+name: context7
+description: Intelligent documentation search and context using context7 service.
+---
+
+# Context7
+
+Query documentation and repositories for intelligent context.
+
+## Usage
+
+```bash
+npx tsx /root/.clawgo/skills/context7/query.ts context <owner/repo> <query>
+```
+
+Example:
+```bash
+npx tsx /root/.clawgo/skills/context7/query.ts context sipeed/clawgo "How does the skill system work?"
+```