Convert to TypeScript

- Renamed bring → bring.ts
- Added TypeScript interfaces for type safety
- Added tsconfig.json for TypeScript configuration
- Updated package.json with TypeScript dependencies
- Updated SKILL.md with TypeScript usage instructions
- Added dist/ to .gitignore

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

package.json

@@ -1,8 +1,18 @@
 {
   "name": "bring-shopping-skill",
   "version": "1.0.0",
-  "description": "Bring! Shopping List Skill for Carson",
+  "description": "Bring! Shopping List Skill - TypeScript CLI",
+  "type": "module",
+  "scripts": {
+    "build": "tsc",
+    "start": "ts-node bring.ts"
+  },
   "dependencies": {
     "bring-shopping": "^2.0.1"
+  },
+  "devDependencies": {
+    "@types/node": "^20.0.0",
+    "ts-node": "^10.9.0",
+    "typescript": "^5.0.0"
   }
 }