Add postinstall script to build TypeScript

Added a new "postinstall" script to `package.json` to automatically build TypeScript files using the `build:tsc` command after dependencies are installed. This ensures that the TypeScript code is compiled immediately following an `npm install`, improving the setup process consistency.

package.json

@@ -10,7 +10,8 @@
     "lint:fix": "eslint --fix --ext .ts .",
     "test:file": "jest --watch --onlyChanged --coverage=true --verbose",
     "test:verbose": "jest --verbose",
-    "version:show": "node -e \"console.log(require('./package.json').version)\""
+    "version:show": "node -e \"console.log(require('./package.json').version)\"",
+    "postinstall": "npm run build:tsc"
   },
   "repository": {
     "type": "git",