Rename KernelAsset to KernelCodeAsset, allow passing arbitrary embedd… #2

Job	Run time
build (ubuntu, stable, native_assets_builder, false)	1m 5s
build (ubuntu, stable, native_assets_cli, false)	59s
build (ubuntu, stable, native_toolchain_c, false)	2m 8s
build (ubuntu, dev, native_assets_builder, false)	1m 8s
build (ubuntu, dev, native_assets_cli, false)	59s
build (ubuntu, dev, native_toolchain_c, false)	2m 4s
build (macos, stable, native_assets_builder, false)	47s
build (macos, stable, native_assets_cli, false)	40s
build (macos, stable, native_toolchain_c, false)	2m 51s
build (macos, dev, native_assets_builder, false)	46s
build (macos, dev, native_assets_cli, false)	35s
build (macos, dev, native_toolchain_c, false)	2m 39s
build (windows, stable, native_assets_builder, false)	2m 0s
build (windows, stable, native_assets_cli, false)	1m 38s
build (windows, stable, native_toolchain_c, false)	3m 48s
build (windows, dev, native_assets_builder, false)	1m 49s
build (windows, dev, native_assets_cli, false)	1m 50s
build (windows, dev, native_toolchain_c, false)	4m 28s
coverage-finished	0s
	32m 14s

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