Add benchmarks to CI

[ganyicz]

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[github-actions]

Benchmark Results

Benchmark	Blade	Blaze	Improvement
No attributes	402.63ms	16.24ms	96%
Attributes only	467.22ms	29.69ms	93.6%
Attributes + merge()	613.40ms	44.01ms	92.8%
Attributes + class()	617.45ms	47.67ms	92.3%
Props + attributes	829.71ms	39.82ms	95.2%
Default slot	439.08ms	24.67ms	94.4%
Named slots	607.01ms	38.48ms	93.7%
@aware (nested)	1,936.52ms	93.50ms	95.2%
Attribute forwarding	1,727.77ms	56.89ms	96.7%

_{10000 iterations x 5 rounds per benchmark}