Added updateProfile and updateEmail for modular SDK (#178)

Author: DharmarajX24

.gitignore

@@ -4,3 +4,4 @@ node_modules
 tsconfig.json
 dist/
 .DS_Store
+.idea

auth-next/manage.js

@@ -0,0 +1,29 @@
+function updateUserProfile() {
+    // [START auth_update_user_profile]
+    const { getAuth, updateProfile } = require("firebase/auth");
+    const auth = getAuth();
+    updateProfile(auth.currentUser, {
+        displayName: "Jane Q. User", photoURL: "https://example.com/jane-q-user/profile.jpg"
+    }).then(() => {
+        // Profile updated!
+    }).catch((error) => {
+        const errorCode = error.code;
+        const errorMessage = error.message;
+        // ..
+    });
+    // [END auth_update_user_profile]
+}
+
+function updateUserEmail() {
+    // [START auth_update_user_email]
+    const { getAuth, updateEmail } = require("firebase/auth");
+    const auth = getAuth();
+    updateEmail(auth.currentUser, "[email protected]").then(() => {
+        // Email updated!
+    }).catch((error) => {
+        const errorCode = error.code;
+        const errorMessage = error.message;
+        // ..
+    });
+    // [END auth_update_user_email]
+}