perf(lexer): align Token on 8

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• perf(lexer): set discrimant for default variant of Kind to 0 #8575
• perf(lexer): align Token on 8 #8574 👈 (View in Graphite)
• perf(span): compare Spans as single u64s #8300 : 1 other dependent PR (#8576 )
• perf(span): hash Span as a single u64 #8299
• refactor(span): all methods take owned Span #8297
• perf(span): align Span same as usize #8298
• ci(benchmark): make lexer benchmark more realistic #8573
• main

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[codspeed-hq]

CodSpeed Performance Report

Merging #8574 will not alter performance

_{Comparing 01-17-perf_lexer_align_token_on_8 (c1d2f83) with 01-04-perf_span_compare_span_s_as_single_u64_s (979be1a)}

Summary

✅ 32 untouched benchmarks

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Not doing anything!