[WIP] feat(cesium): optional Cesium/ArcGIS reference + parity oracle crate #508

Job	Run time
native-backend/stable	8m 23s
hpc-stream-parallel/rayon	1m 18s
tier4-avx512-check	27s
clippy/1.95.0	41s
nostd/thumbv6m-none-eabi/stable	27s
format/stable	23s
Pass MSRV values to other jobs	4s
cargo-careful	0s
docs/nightly	0s
cross_test/${{ matrix.target }}/${{ matrix.rust }}	-1s
nightly-simd-polyfill	-1s
miri	-1s
blas-msrv	45s
tests/1.95.0	10m 55s
tests/stable	11m 12s
tests/beta	9m 11s
conclusion	0s
	43m 43s

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