Draft: Add cosmic streams loader#599

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swelborn wants to merge 6 commits intodevfrom

Commits on Jan 31, 2025

cosmic streams loader
swelborn
committed

Commits on Feb 4, 2025

Made compatible with ptypy internals and adjusted geometry variables
bjoernenders
committed
Added templates to work with CosmicStreamLoader
bjoernenders
committed

Commits on Feb 6, 2025