Move large objects out of the atlas

[DoubleHypercube]

About the PR

Moves the Cosmic God, Cosmic Monument, and Reactor/Turbine out of the atlas.

Why / Balance

These are walrii and take up huge amounts of space on the atlas for no reason. Similarly large sprites (Ratvar, Nar'sie, the Singularity etc) are "metaAtlas": false in their RSI meta. This PR adds said field to the aforementioned walrii.

I would have shrunk the Cosmic God (because it's the biggest of the four) but the sprite is 255x260 so the smallest clean divisor is 5, which is far too small and would lose significant detail.

Technical details

Media

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Requirements

• I have tested all added content and changes.
• I have added media to this PR or it does not require an ingame showcase.

Licensing:

• I confirm that I am the creator of the content in this PR, and allow licensing it under the following license(s), or that the original author has given me permission to do so:
  • MIT (https://github.com/Floof-Station/Panta-Rhei/blob/master/LICENSE-MIT.txt)

Breaking changes

Changelog

🆑 DoubleHypercube

• tweak: Dewalrussed the sprite atlas.