Rust ZBI lib

Rust version of C library to work with ZBI format.

See Rust documentation for zbi for library details.

Notes

Currently sdk/lib/zbi-format is not ready to provide Rust bindings from FIDL. So we are using buildgen generated version from C headers: src/firmware/lib/zbi-rs/src/zbi_format.rs

Another alternative is manually created version: src/sys/lib/fuchsia-zbi/abi.