Restore main for ESLint compatibility

Author: thewilkybarkid

package.json

@@ -2,6 +2,7 @@
   "name": "tinyld",
   "description": "Simple and Performant Language detection library (pure JS and zero dependencies)",
   "version": "1.3.0",
+  "main": "./dist/tinyld.normal.node.js",
   "exports": {
     ".": {
       "require": "./dist/tinyld.normal.node.js",