Dissallow unwraps on L1 crates

[mpaulucci]

Currently, only the prover dissallows unwraps, see:

ethrex/crates/l2/prover/Cargo.toml

Lines 70 to 71 in a9adf9c

	[lints.clippy]
	unwrap_used = "deny"

Unwraps in tests are still allowed:

ethrex/crates/l2/clippy.toml

Line 1 in a9adf9c

allow-unwrap-in-tests = true

We should add this rule to L1 crates one by one and remove unwraps. Ideally we should change it for Errors, but if the error is unrecoverable we should at least use expect.

This ticket should be tackled in many PRs, even more than one PR per crate potentially. At the end, the rules to forbid unwraps should be enforced.

[ilitteri]

I think we should deny expects too and allow them only where the error is unrecoverable with a comment explaining why it is an unrecoverable error.