[WIP] feat(cesium): optional Cesium/ArcGIS reference + parity oracle crate #498

Job	Run time
clippy/1.95.0	50s
format/stable	20s
nostd/thumbv6m-none-eabi/stable	29s
tier4-avx512-check	32s
Pass MSRV values to other jobs	3s
native-backend/stable	7m 50s
hpc-stream-parallel/rayon	1m 30s
cross_test/${{ matrix.target }}/${{ matrix.rust }}	0s
miri	0s
docs/nightly	0s
cargo-careful	-1s
nightly-simd-polyfill	-1s
blas-msrv	52s
tests/1.95.0	10m 25s
tests/beta	11m 11s
tests/stable	11m 14s
conclusion	0s
	45m 14s

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