Added cjs entrypoint

Author: ahnv

index.cts

@@ -0,0 +1,3 @@
+import ImageKit from './index'
+
+export = ImageKit;

package.json

@@ -2,11 +2,11 @@
   "name": "imagekit",
   "version": "4.0.0",
   "description": "Offical NodeJS SDK for ImageKit.io integration",
-  "main": "./dist/cjs/index.js",
+  "main": "./dist/cjs/index.cjs",
   "module": "./dist/esm/index.js",
   "exports": {
     "import": "./dist/esm/index.js",
-    "require": "./dist/cjs/index.js"
+    "require": "./dist/cjs/index.cjs"
   },
   "scripts": {
     "compile": "concurrently 'yarn:compile:cjs' 'yarn:compile:esm' 'yarn:compile:types' && yarn compile:fixup",

tsconfig.cjs.json

@@ -6,6 +6,6 @@
     "outDir": "dist/cjs",
     "declaration": true,
   },
-	"include": ["index.ts", "libs/**/*", "utils/*", "test/*", "types/*"],
+	"include": ["index.ts", "index.cts", "libs/**/*", "utils/*", "test/*", "types/*"],
 	"exclude": ["node_modules", "dist"],
 }