[WIP] feat(cesium): optional Cesium/ArcGIS reference + parity oracle crate #506

Job	Run time
native-backend/stable	7m 40s
nostd/thumbv6m-none-eabi/stable	25s
Pass MSRV values to other jobs	4s
clippy/1.95.0	40s
hpc-stream-parallel/rayon	1m 19s
tier4-avx512-check	27s
format/stable	21s
miri	0s
nightly-simd-polyfill	0s
cross_test/${{ matrix.target }}/${{ matrix.rust }}	0s
cargo-careful	0s
docs/nightly	0s
blas-msrv	56s
tests/1.95.0	11m 12s
tests/beta	11m 22s
tests/stable	11m 8s
conclusion	-1s
	45m 33s

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