Add README to npm packages

- Copy root README to packages/stratus-sdk/ for npm display
- Bump @usestratus/sdk to 0.12.1, @usestratus/mcp-aws to 0.1.1

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

Author: tylergibbs1

packages/mcp-aws/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@usestratus/mcp-aws",
-	"version": "0.1.0",
+	"version": "0.1.1",
 	"type": "module",
 	"main": "./dist/index.js",
 	"types": "./dist/index.d.ts",