`sock_accept` had been added in WASI snapshot1

[hangedfish]

Hi, I found the definition of sock_accept had been added in WASI snapshot1

https://github.com/WebAssembly/WASI/blob/ab030f6639f0de7e87e2fa5bed45c6bd1c324ce7/phases/snapshot/witx/wasi_snapshot_preview1.witx#L476-L485

and wasi-libc has been updated.

WebAssembly/wasi-libc#282
WebAssembly/wasi-libc#287

Shall we update sock_accept interface in warm?

[lum1n0us]

thanks for reminding us.