chore: add MIT LICENSE file (repo license was declared in package.json only)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "aura-courier-mcp",
-  "version": "2.3.1",
+  "version": "2.3.2",
   "description": "Universal Bangladesh courier MCP server — Steadfast, Pathao, RedX & Paperfly with a built-in fraud-risk engine — for Claude, Antigravity, Cursor & n8n AI agents. Runs as a local npx (STDIO) server or a remote HTTP endpoint.",
   "main": "dist/index.js",
   "type": "module",
@@ -9,7 +9,8 @@
   },
   "files": [
     "dist",
-    "README.md"
+    "README.md",
+    "LICENSE"
   ],
   "publishConfig": {
     "access": "public"