[WIP] feat(cesium): optional Cesium/ArcGIS reference + parity oracle crate #507

Job	Run time
clippy/1.95.0	40s
hpc-stream-parallel/rayon	1m 19s
Pass MSRV values to other jobs	3s
nostd/thumbv6m-none-eabi/stable	27s
native-backend/stable	8m 24s
format/stable	21s
tier4-avx512-check	27s
docs/nightly	0s
miri	0s
cross_test/${{ matrix.target }}/${{ matrix.rust }}	0s
cargo-careful	0s
nightly-simd-polyfill	0s
tests/1.95.0	11m 3s
blas-msrv	52s
tests/beta	10m 46s
tests/stable	9m 25s
conclusion	0s
	43m 47s

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