chore(build): skip test files from bundle and output cjs in cjs folder

.gitignore

@@ -1,5 +1,5 @@
 es
-lib
+cjs
 node_modules
 npm-debug.log*
 src/index.d.ts

package.json

@@ -12,20 +12,20 @@
   "homepage": "https://github.com/simoneb/axios-hooks",
   "repository": "simoneb/axios-hooks",
   "bugs": "https://github.com/simoneb/axios-hooks/issues",
-  "main": "lib/index.js",
+  "main": "cjs/index.js",
   "module": "es/index.js",
   "typings": "./index.d.ts",
   "files": [
-    "lib",
-    "es",
-    "src",
-    "index.d.ts"
+    "cjs/",
+    "es/",
+    "src/index.js",
+    "./index.d.ts"
   ],
   "scripts": {
-    "build:commonjs": "cross-env BABEL_ENV=commonjs babel src/index.js --out-dir lib",
+    "build:commonjs": "cross-env BABEL_ENV=commonjs babel src/index.js --out-dir cjs",
     "build:es": "babel src/index.js --out-dir es",
     "build": "run-p build:*",
-    "clean": "rimraf lib es coverage",
+    "clean": "rimraf cjs es coverage",
     "format": "prettier --write \"src/**/*.{js,md,ts}\"",
     "lint": "eslint src",
     "prepare": "npm run clean && npm run build",