feat: Implement tracing & thiserror
error types
#29
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This implements tracing messages using the
tracing
crate and error types using thethiserror
crate.Closes #25
Closes #26
I'm somewhat waiting for n0-computer/iroh-car#12 to land so I can improve the error types a bit.
Additionally, it'd be nice to have a better
BlockStore
trait eventually, so (1) we can get rid off theBlockStoreIncompatible
error and (2) use a custom error type from theBlockStore
instead of a hard-codedanyhow::Error
.