Add repository link for npmjs.

Author: kburov-sc

package.json

@@ -4,6 +4,10 @@
   "description": "100% typesafe dependency injection framework for TypeScript projects",
   "license": "MIT",
   "author": "Snap Inc.",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/Snapchat/ts-inject.git"
+  },
   "main": "./dist/cjs/index.js",
   "module": "./dist/esm/index.js",
   "types": "./dist/types/index.d.ts",