cksum: Bring back blake3 algorithm #11316

Performance Regression: -99.88%

❌ 2 regressed benchmarks
✅ 298 untouched benchmarks
⏩ 46 skipped benchmarks¹

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

	Mode	Benchmark	`BASE`	`HEAD`	Efficiency
❌	Simulation	`cksum_blake3`	116.3 µs	93,152.5 µs	-99.88%
❌	Memory	`cksum_blake3`	33.9 KB	43.5 KB	-21.95%

_{Comparing RenjiSann:cksum-blake3 (f9c8370) with main (d830e84)}

46 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩