Don't publish root index.ts files to NPM as we have typings (#1333)

.npmignore

@@ -10,3 +10,5 @@
 /src/
 /test/
 /test*.js
+index.ts
+index.cli.ts

CHANGELOG.md

@@ -4,6 +4,7 @@ v4.1.2
 ---
 * Fix `transformObjectKeys` performance in some edge-cases
 * Revert `Improved stringArray calls wrapper templates` commit. Fixes https://github.com/javascript-obfuscator/javascript-obfuscator/issues/1330
+* Don't publish root index.ts files to NPM. Fixes https://github.com/javascript-obfuscator/javascript-obfuscator/issues/1252
 * Update `class-validator` version. Fixes https://github.com/javascript-obfuscator/javascript-obfuscator/issues/1324
 * Update other dependencies
 * CLI: support `.mjs` and `.cjs` extensions. Kudos to https://github.com/javascript-obfuscator/javascript-obfuscator/pull/1301