* core: use Hyprgraphics::CAsyncResourceGatherer
* core: move screencopy frame generation to the new resource manager
* core: introduce a dedicated onAssetUpdate callback
* check for unloaded before finished and some cleanup
* also allow for dynamic label resource deduplication
use a simple counter instead of a timestamp to allow the same
widget on a different monitor to reuse a text cmd resource.
I didn't do this before, because I was worried about two labels that use
the same command with different reload times. I mitigated that by just
incrementing the revision by the time interval. This should be sufficent
to avoid clashes.
* don't render within onAssetUpdate to avoid duplicate renders
another much improvement for multi monitor setups.
allows updating within the same frame for most labels.
* remove nvidia workaround :)
I tested and it seems like the resource manager revision makes
the nvidia workaround obsolete.
