nom: add From<nom::Err<nom::error::Error<I>>> for nom::Err<NomError<I>>

#325
Opened by flokli at 2023-10-16T12·03+00

For @raitobezarius

See https://cl.tvl.fyi/c/depot/+/9730/comment/2f1e2abe_cb718bf2/, we should probably have an upstream impl for this.