Bulk cat item image update

[captainbraddles]

This script allows a user to update the picture and/or icon fields in catalog items in bulk. This can be used for scenarios where the same icon needs to be used for multiple existing catalog items, eg. all Apple related catalog items need to have their icons updated to a different colour Apple icon.

[Lacah]

Thanks for your submission. It appears that this pull request contains more files than described in the title. Please review and update the pull request to either remove the extra/unintended files or to update the description to be more comprehensive. Ensure your contributions are meaningful and adhere to the project’s standards. [If applicable: You can create a new branch on your forked repository to avoid accidental inclusions of new commits in the future.]. Closing this for now. Once you make additional changes, feel free to re-open this Pull Request or create a new one.

[captainbraddles]

Thanks Lacah. I'm still new to github and submitting requests so learning as I go. I'll make the changes and create a new pull request.

Cheers,

Brad