Cross-export texture continuity

[Igrium]

The Minecraft atlas texture, and by extension the world texture within replays, is non-deterministic. Normally, this is fine. However, when using multiple replays as a part of one project (ex: multiple shots), it may be desirable to share textures across Blend files to cut down on file-size and streamline the workflow.

Given how vital the atlas texture is to the Minecraft engine, implementing cross-instance uniformity on an export level is difficult at best. Still, a solution to this that allows for some cross-blend texture sharing without too much hassle would be desirable.

[Igrium]

What we're trying to avoid