MAESTRO: Add OpenClaw plugin scaffold with configuration files

Create openclaw/ directory with plugin manifest (openclaw.plugin.json),
package.json, tsconfig.json, and .gitignore. Plugin manifest includes
full configSchema with observationFeed settings for live streaming
observations to messaging channels.

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

openclaw/package.json

@@ -0,0 +1,13 @@
+{
+  "name": "@claude-mem/openclaw-plugin",
+  "version": "1.0.0",
+  "private": true,
+  "type": "module",
+  "main": "dist/index.js",
+  "scripts": {
+    "build": "tsc"
+  },
+  "devDependencies": {
+    "typescript": "^5.3.0"
+  }
+}