H2S buffer fix - no glue

The filament buffer can jam when printing with H2S in the door area. This is the reason for the clicking noises and AMS malfunctions.It is recommended to install a longer PTFE tube and add a guide for the PTFEF tubing. There are already several solutions/guides available. However, all of them are glued in place. I don't want to glue anything into my printer, as I hope that Bambu will release a functioning buffer.That's why I designed a solution that can be clicked into place. For higher temperature resistance, print with ABS.