Enable clippy lints on a workspace level

This enables a lot more lints than before in some crates, so this fixed a lot of warnings as well.

crates/iana-codegen/Cargo.toml

@@ -7,6 +7,9 @@ license.workspace = true
 homepage.workspace = true
 repository.workspace = true
 
+[lints]
+workspace = true
+
 [dependencies]
 anyhow.workspace = true
 async-trait = "0.1.74"

crates/iana-codegen/src/main.rs

@@ -12,10 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#![forbid(unsafe_code)]
-#![deny(clippy::all, clippy::str_to_string, rustdoc::broken_intra_doc_links)]
-#![warn(clippy::pedantic)]
-
 use std::{collections::HashMap, fmt::Display, sync::Arc};
 
 use camino::{Utf8Path, Utf8PathBuf};