feat(llm-security-copilot): port llm-security v5.1.0 to GitHub Copilot CLI

Full port of llm-security plugin for internal use on Windows with GitHub
Copilot CLI. Protocol translation layer (copilot-hook-runner.mjs)
normalizes Copilot camelCase I/O to Claude Code snake_case format — all
original hook scripts run unmodified.

- 8 hooks with protocol translation (stdin/stdout/exit code)
- 18 SKILL.md skills (Agent Skills Open Standard)
- 6 .agent.md agent definitions
- 20 scanners + 14 scanner lib modules (unchanged)
- 14 knowledge files (unchanged)
- 39 test files including copilot-port-verify.mjs (17 tests)
- Windows-ready: node:path, os.tmpdir(), process.execPath, no bash

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

plugins/llm-security-copilot/plugin.json

@@ -0,0 +1,24 @@
+{
+  "name": "llm-security",
+  "version": "5.1.0",
+  "description": "Security scanning, auditing, and threat modeling for AI coding agents. OWASP LLM Top 10, Agentic AI Top 10, Skills Top 10, MCP Top 10, DeepMind Agent Traps.",
+  "author": "Kjell Tore Guttormsen",
+  "license": "MIT",
+  "skills": "skills/",
+  "agents": "agents/",
+  "hooks": "hooks/hooks.json",
+  "repository": "https://git.fromaitochitta.com/open/claude-code-llm-security",
+  "engines": {
+    "node": ">=18.0.0"
+  },
+  "keywords": [
+    "security",
+    "llm",
+    "owasp",
+    "scanning",
+    "auditing",
+    "threat-modeling",
+    "mcp",
+    "copilot"
+  ]
+}