Add tokenstream support for bytes attribute

[github-actions[bot]]

Benchmark for 9e5a546

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| Test | Base | PR | % | |------|--------------|------------------|---| | count | 5.0±0.03µs | 5.0±0.01µs | 0.00% | | deku_read_bits | 1178.2±11.13ns | **1166.9±17.72ns** | **-0.96%** | | deku_read_byte | 5.8±0.06ns | 5.8±0.07ns | 0.00% | | deku_read_enum | 5.3±0.03ns | 5.3±0.05ns | 0.00% | | deku_read_vec | 85.2±1.32ns | **43.0±0.69ns** | **-49.53%** | | deku_write_bits | 199.4±3.08ns | **181.6±3.98ns** | **-8.93%** | | deku_write_byte | 25.0±0.18ns | 25.0±0.56ns | 0.00% | | deku_write_enum | 22.8±0.34ns | 22.8±0.22ns | 0.00% | | deku_write_vec | **423.3±8.16ns** | 443.4±7.30ns | **+4.75%** | | read_all | 5.7±0.08µs | 5.7±0.03µs | 0.00% | | read_all_bytes | **5.6±0.04µs** | 5.7±0.12µs | **+1.79%** |