Add Arraylist support in WriteableArray

[cacheung]

Add Arraylist support in WriteableArray for Android. If response payload has arraylist in it, it can be extracted now.

Description

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [ ] I have signed the Adobe Open Source CLA.
• [ ] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.

[cacheung]

@yangyansong-adbe @emdobrin Do we need to add ArrayList check for other extensions if they are using ArrayUtil?

[yangyansong-adbe]

@cacheung can you check why CI is not triggered for this PR?

[yangyansong-adbe]

@yangyansong-adbe @emdobrin Do we need to add ArrayList check for other extensions if they are using ArrayUtil?

@cacheung Yes, I think we need to update this utility method in other extensions.

[cacheung]

@cacheung can you check why CI is not triggered for this PR?

CI is working now after @yangyansong-adbe enabled the setting for running CI for each PR.