WIP: Migrate fs path APIs to async

[cijiugechu]

No description provided.

[github-actions]

⏱️ Benchmark Results

Metric	Base	Head	Difference
Mean	2.705s	2.624s	-2.97% ✅
Median	2.694s	2.644s	-1.87% ✅
Min	2.571s	2.383s
Max	2.982s	2.844s
Std Dev	0.096s	0.101s

📊 Raw benchmark data

Base times: 2.982s, 2.793s, 2.956s, 2.683s, 2.686s, 2.716s, 2.718s, 2.742s, 2.632s, 2.745s, 2.733s, 2.698s, 2.571s, 2.576s, 2.687s, 2.803s, 2.614s, 2.721s, 2.680s, 2.729s, 2.751s, 2.776s, 2.713s, 2.586s, 2.670s, 2.691s, 2.616s, 2.600s, 2.602s, 2.673s

Head times: 2.637s, 2.636s, 2.708s, 2.438s, 2.844s, 2.684s, 2.383s, 2.631s, 2.641s, 2.717s, 2.680s, 2.668s, 2.575s, 2.697s, 2.666s, 2.397s, 2.682s, 2.637s, 2.521s, 2.676s, 2.615s, 2.539s, 2.694s, 2.467s, 2.647s, 2.606s, 2.685s, 2.588s, 2.716s, 2.657s

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Benchmark: gatsby install-full-cold