Depends on how you wanna go about it. If you'd like to make a true channel / forwarder that isn't a buggy piece of garbage.. you should look into learning ProcUI to actually build one. You can then use NUSPacker to generate the WUP files needed to install the title.
The easier method would be just to use Aroma since it'll put all of your WUHB and RPX apps on the home menu anyways.
You could achieve something similar on Tiramisu by replacing the RPX of a title with your own, but that's incredibly buggy. While it works, and it'd launch, it'd also likely crash the second you tried to exit it.