Interlocking and stackable containers V3

Summary

This is a simple interlocking containers that can be arranged and stacked.
Interlocking is asymmetric. upgrade of https://www.thingiverse.com/thing:6241141
Customize: https://github.com/jujumo/interlocking_containers.git

NOTE: Version 3 is compatible with Version 2. Only the position of the keying feature (cut corner) changes.

## Features

- interlocking,
- stackable,
- secure with a locking pin,
- several sizes,
- cut corner to identify the assembly position.

## Description
These containers attach to each other using an interlocking mechanism.
It is also still possible to stack them (at least for vase mode).

The pin helps secure the containers together. Simply slide the filament into the groove.

The cut corner is a visual cue to ensure containers are assembled in the correct orientation. The opposite sides are complementary, so the containers can only fit together in one specific way. If this orientation is not respected, the containers will not align properly.