feat: update module generator to have files field

TICKET: WP-6096

Author: zahin-mohammad

scripts/sdk-coin-generator/template/base/package.json

@@ -4,6 +4,9 @@
   "description": "BitGo SDK coin library for <%= coin %>",
   "main": "./dist/src/index.js",
   "types": "./dist/src/index.d.ts",
+  "files": [
+    "dist"
+  ],
   "scripts": {
     "build": "yarn tsc --build --incremental --verbose .",
     "fmt": "prettier --write .",