feat: add recursive folder support to cldAssetsLoader

[taciturnaxolotl]

Description

Added recursive folder support as a flag in cldAssetsLoader, as well as added the ability to use an array for the resource types.

Issue Ticket Number

Fixes #33
Fixes #62

Type of change

• 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 not work as expected)
• Fix or improve the documentation
• This change requires a documentation update

Checklist

• I have followed the contributing guidelines of this project as mentioned in CONTRIBUTING.md
• I have created an issue ticket for this PR
• I have checked to ensure there aren't other open Pull Requests for the same update/change?
• I have performed a self-review of my own code
• I have run tests locally to ensure they all pass
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes needed to the documentation

[vercel]

@taciturnaxolotl is attempting to deploy a commit to the Cloudinary DevX Team on Vercel.

A member of the Team first needs to authorize it.

[taciturnaxolotl]

I can remove the test files if you want! I just made them to make testing a wee bit easier on my part.

[jlooper-cloudinary]

Prompting @eportis-cloudinary for a review please