feat(exports): modernize package exports and expose watcher class

package.json

@@ -1,10 +1,11 @@
 {
   "name": "@git.zone/tswatch",
-  "version": "2.1.5",
+  "version": "2.2.0",
   "private": false,
   "description": "A development tool for automatically watching and re-compiling TypeScript projects upon detecting file changes, enhancing developer workflows.",
-  "main": "dist_ts/index.js",
-  "typings": "dist_ts/index.d.ts",
+  "exports": {
+    "./": "./dist_ts/index.js"
+  },
   "type": "module",
   "author": "Lossless GmbH",
   "license": "MIT",