Defines the types supported by the Rust ZBI parser. This is a subset from zircon/system/public/zircon/boot/image.h, and should be updated as needed.
Must be in the extra field for headers of type ZbiType::Container.
Every header type must have this magic value.
The CRC32 field must be set to this when not using CRC32.
Define a container header that describes a container content length of