Add dedicated entry points for Cordova and React Native (#4854)

Author: sam-gc

packages-exp/auth-exp/cordova/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "@firebase/auth-exp/cordova",
+  "description": "A Cordova-specific build of the Firebase Auth JS SDK",
+  "browser": "../dist/cordova/index.js",
+  "typings": "../dist/cordova/index.cordova.d.ts"
+}

packages-exp/auth-exp/package.json

@@ -12,7 +12,9 @@
   "webworker": "dist/index.webworker.esm5.js",
   "files": [
     "dist",
-    "internal/package.json"
+    "cordova/package.json",
+    "internal/package.json",
+    "react-native/package.json"
   ],
   "scripts": {
     "lint": "eslint -c .eslintrc.js '**/*.ts' --ignore-path '../../.gitignore'",

packages-exp/auth-exp/react-native/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "@firebase/auth-exp/react-native",
+  "description": "A React Native-specific build of the Firebase Auth JS SDK",
+  "browser": "../dist/rn/index.js",
+  "typings": "../dist/rn/index.rn.d.ts"
+}