fix(cli-plugin-metro): ensure bundle destination directory exist

[tido64]

Summary:

react-native bundle currently fails if the bundle destination directory does not exist.

Example:

% yarn react-native bundle --entry-file index.js --platform android --dev true --bundle-output dist/main.android.jsbundle --assets-dest dist/res
                Welcome to Metro v0.73.10
              Fast - Scalable - Integrated


info Writing bundle output to:, dist/main.android.jsbundle
error ENOENT: no such file or directory, open 'dist/main.android.jsbundle'.
Error: ENOENT: no such file or directory, open 'dist/main.android.jsbundle'

Test Plan:

Run react-native bundle before and after applying the changes in any app. In my case, I used react-native-test-app.

Checklist

• Documentation is up to date to reflect these changes.
• Follows commit message convention described in CONTRIBUTING.md

[szymonrybczak]

Thank you!