Disable clippy::unwrap_or_default lint for the project (#1647)

* disable clippy lint trigerred by a macro

* typo in lint name

* Update macro/src/lib.rs

Co-authored-by: Niklas Adolfsson <niklasadolfsson1@gmail.com>

* move missing docs

* add workspace.lints = true for remaining crates

* lint fixes

* Update signer/src/eth.rs

Co-authored-by: James Wilson <james@jsdw.me>

---------

Co-authored-by: Niklas Adolfsson <niklasadolfsson1@gmail.com>
Co-authored-by: James Wilson <james@jsdw.me>

metadata/Cargo.toml

@@ -37,3 +37,6 @@ bench = false
 [[bench]]
 name = "bench"
 harness = false
+
+[lints]
+workspace = true

metadata/benches/bench.rs

@@ -3,7 +3,7 @@
 // see LICENSE for license details.
 
 //! Benchmarks for metadata hashing.
-
+#![allow(missing_docs)]
 use codec::Decode;
 use criterion::*;
 use frame_metadata::{RuntimeMetadata, RuntimeMetadataPrefixed};
@@ -92,4 +92,5 @@ criterion_group!(
         bench_get_constant_hash,
         bench_get_storage_hash,
 );
+
 criterion_main!(benches);