[Feature] Update ls lint to reject file names with + included

[ameliemaia]

Is your feature request related to a problem? Please describe. AWS buckets don't like + in file names. It causes errors when requesting assets.

Describe the solution you'd like We should update the ls lint rules to check for + in file names and throw errors if found.

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered.

What does the proposed API look like? What kind of methods it will have, how do you think you will use it?

Additional context Add any other context or screenshots about the feature request here.