feat: set up CDN publish pipeline for auth0-spa-js (#1402)

Jira Link : https://auth0team.atlassian.net/browse/ESD-50270
Added makefile to support CDN publish 

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### Changes

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### Testing

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- [x] This change adds unit test coverage
- [x] This change adds integration test coverage
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### Checklist

- [x] I have read the [Auth0 general contribution
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Author: KajalMathurSingh

Jenkinsfile

@@ -0,0 +1,21 @@
+.PHONY: install lint test build publish
+
+install:
+	@echo "Running install..."
+	npm ci
+
+lint:
+	@echo "Running lint..."
+	npm run lint
+
+test:
+	@echo "Running test..."
+	npm run test
+
+build:
+	@echo "Running build..."
+	rm -rf build && npm run build
+
+publish:
+	@echo "Running cdn-publish..."
+	npm run publish:cdn

Makefile

@@ -7,12 +7,28 @@
   "main": "dist/lib/auth0-spa-js.cjs.js",
   "types": "dist/typings/index.d.ts",
   "module": "dist/auth0-spa-js.production.esm.js",
+  "ccu": {
+    "name": "auth0-spa-js",
+    "cdn": "https://cdn.auth0.com",
+    "bucket": "assets.us.auth0.com",
+    "localPath": "dist",
+    "mainBundleFile": "auth0-spa-js.production.js",
+    "digest": {
+      "hashes": [
+        "sha384"
+      ],
+      "extensions": [
+        ".js"
+      ]
+    }
+  },
   "scripts": {
     "dev": "rimraf dist && rollup -c --watch",
     "start": "npm run dev",
     "docs": "typedoc --options ./typedoc.js src",
     "build": "rimraf dist && rollup -m -c --environment NODE_ENV:production && npm run test:es-check",
     "build:stats": "rimraf dist && rollup -m -c --environment NODE_ENV:production --environment WITH_STATS:true && npm run test:es-check && open bundle-stats/index.html",
+    "lint": "eslint --ext .jsx,.js src/",
     "lint:security": "eslint ./src --ext ts --no-eslintrc --config ./.eslintrc.security",
     "test": "jest --coverage --silent",
     "test:watch": "jest --coverage --watch",
@@ -98,21 +114,6 @@
     "Single Page Application authentication",
     "SPA authentication"
   ],
-  "ccu": {
-    "name": "auth0-spa-js",
-    "cdn": "https://cdn.auth0.com",
-    "mainBundleFile": "auth0-spa-js.production.js",
-    "bucket": "assets.us.auth0.com",
-    "localPath": "dist",
-    "digest": {
-      "hashes": [
-        "sha384"
-      ],
-      "extensions": [
-        ".js"
-      ]
-    }
-  },
   "husky": {
     "hooks": {
       "pre-commit": "pretty-quick --staged"