Set padding on multiple layers within a symbol
### Feature request / enhancement

I tend to construct button components like this:

- A text layer
- A symbol (this symbol contains a single rectangle with a solid color)
- A mask (this helps me get border radii on my buttons)

When I use this plugin, the padding is applied to the "mask" layer—as expected given it is the layer furthest to the back—except I'd like it to be applied to both the symbol and the mask. I feel this might be a huge ask. I'd be happy to help develop this feature out, too, if that's an option!