New - Flex style directives

[Xinchro]

Type of request
New

Component, pattern, template, helper or foundation?
Helper

Nature of request

I'm currently removing an old, deprecated, packages called Angular Flex-Layout and replacing what I can with Canopy.

I've found that some things exist in Canopy, while others don't.

I want to add some directives that I'm missing, such as fxFlex; I would replace this with something appropriately named like lgFlex.
They would have similar structure, for example: fxFlex="0 0 0%" would equate to lgFlex="0 0 0%".
Currently, I'm envisioning them being alongside Row Gap in Canopy, as that seems like the most appropriate place where these would belong.
As of writing, I think I would be adding 3 to 5 new directives.

I think these new additions won't constitute any breaking changes or any modifications to existing features.