Adding this Source
Tap "Add to Sideload Source" at the top of this page, then pick your client. To add the source manually:
SideStore
Open SideStore > Sources > tap "+" and paste the source URL.
AltStore
Go to My Apps > tap "+" (or the Sources tab in AltStore PAL) and paste the source URL.
LiveContainer
Open LiveContainer > Sources > tap "+" and paste the source URL.
Scarlet
Choose Scarlet in the dialog to copy the URL, then open Scarlet > Repos > tap "+" and paste it.