Refactor data generation to be cleaner and more principled. #2999

Job	Run time
Run tests (1.80, false)	2m 58s
Run tests (1.81, false)	2m 54s
Check lint and rustfmt	14s
Build binary (Windows)	2m 45s
Run tests (stable, false)	2m 39s
Build binary	23s
Run tests (beta, false)	2m 41s
Semver: core-graphics	42s
Run tests (nightly, true)	2m 47s
Check if version changed	8s
Caching across rustdoc versions	1m 38s
Semver: bevy_gltf v0.9.1	59s
Semver: bevy_core v0.9.0	42s
Caching with feature config changed	37s
Semver: libp2p-dcutr 1.62.0 and libp2p-relay 0.14.0	1m 9s
Semver: libp2p-gossipsub ~0.44.0 + libp2p-request-response ~0.24.0	1m 18s
Semver: libp2p-uds 0.37.0	1m 9s
Semver: libp2p-core 0.37.0	1m 0s
Semver: clap v3.2.0	46s
Semver: sqllogictest v0.13.0	37s
Semver: tokio ~v1.25.0 (explicit)	3s
Semver: tokio ~v1.25.0 (implicit)	5s
Check failure when installed rustc is too old	21s
Semver: dependency has warnings with "-Dwarnings" (libp2p v0.53.1)	1m 11s
Semver: perf-event-open-sys2 v5.0.0	12s
Semver: ref-slice fork (git)	53s
Semver: ref-slice fork (sparse)	9s
Semver: ref-slice fork (Windows) (git)	1m 17s
Semver: ref-slice fork (Windows) (sparse)	1m 25s
All CI stages	1s
Check for semver compliance	0s
Run the release workflow	0s
	33m 43s

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