Widget/attachment

[lauri457]

PR Description:

This pr has the html template and controller for a simple widget that uses the oob attachment picker related directives to display the picker and attachment list to be used a catalog item custom variable.

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[bird-03]

@lauri457

Thanks for your contribution, the use looks very useful for a widget controller for handling attachment , error handling.

It's looks good!!!

Keeping exploring the other repos and contributing with amazing ideas

Happy Hacking