There is this
https://github.com/Maschell/StreamingPluginWiiU and
https://github.com/Maschell/StreamingPluginClient
I got it working with tiramisu but the quality isn't the greatest but not terrible. It's pretty slow though when you increase the resolution to 480p. Probably not very usable for playing games.
It requires this
https://gbatemp.net/threads/wii-u-plugin-system.496659/
And if you already have aroma setup you can copy the back end files from there to the tiramisu folders:
It seems to need these files but may not require them all these are just the ones I copied over and it seemed to work:
sd:\wiiu\environments\[insert environment here]\modules\setup\10_wums_loader.rpx
sd:\wiiu\environments\[insert environment here]\modules\PluginBackend.wms
sd:\wiiu\environments\[insert environment here]\modules\ContentRedirectionModule.wms
sd:\wiiu\environments\[insert environment here]\modules\MemoryMappingModule.wms
sd:\wiiu\environments\[insert environment here]\modules\PatchMemoryRelocationsModule.wms
Copy the plugin to sd:\wiiu\plugins
Load the plugin through the homebrew launcher with the wii u plugin loader
Enable the slider and exit
Open the client on the pc and input the wii u IP address.
To change the output resolution it's R dpad down and -