Karcher vc6 hose lock for Cyclone Dust Collector

**_Karcher vc6 hose fastening mechanism._**
I make it for use [PcTronics](https://www.thingiverse.com/PcTronics/about)'s [Cyclone Dust Collector (Remix)](https://www.thingiverse.com/thing:1447214) with my Karcher VC6300 vacuum. I think it sutable for all VC6 series.

There are to versions:
- **karcher_glued**: this have stronger latch. You need to glue latch after printing.
- **karcher_without_glue**: This have weaker latch, but it's strong enough if you use it in static conditions (for CN