Use a CSS layer for styles

[Gawdl3y]

Is your feature request related to a problem? Please describe.
With CSS layer usage becoming more prominent, it would be useful to be able to specify a CSS layer (or layers) to use for the styles auto-inserted by this module. Perhaps somewhat more critically, FontAwesome's sr-only utilities conflict with Tailwind v4's similar utilities due to Tailwind v4 using layers for all of its styles and FontAwesome not doing so. That's easily solvable in a less fancy setup with manually imported CSS (without tree-shaking), but isn't so much with this module currently.

Describe the solution you'd like
I would like this module to either wrap its auto-inserted styles in a CSS layer by default, or allow for specifying a layer to use for them through some form of configuration.

Describe alternatives you've considered
Not sure of any viable alternatives that don't involve just ditching layers.

Additional context
See this discussion on Tailwind's repo for the aforementioned conflict between Tailwind v4's sr-only and FontAwesome's sr-only. Due to Tailwind v4's utilities being in a layer and FontAwesome's not being in a layer, FontAwesome's sr-only always ends up overriding Tailwind's unless you either manually import FontAwesome's CSS with a layer specified (not currently possible with this module AFAIK) or manually import Tailwind's utilities without a layer (potentially problematic).