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/oauth2-types/Cargo.toml

@@ -7,6 +7,9 @@ license.workspace = true
 homepage.workspace = true
 repository.workspace = true
 
+[lints]
+workspace = true
+
 [dependencies]
 http.workspace = true
 serde.workspace = true

crates/oauth2-types/src/lib.rs

@@ -20,14 +20,7 @@
 //! [OpenID Connect]: https://openid.net/connect/
 //! [Matrix Authentication Service]: https://github.com/matrix-org/matrix-authentication-service
 
-#![forbid(unsafe_code)]
-#![deny(
-    clippy::all,
-    clippy::str_to_string,
-    rustdoc::broken_intra_doc_links,
-    missing_docs
-)]
-#![warn(clippy::pedantic)]
+#![deny(missing_docs)]
 #![allow(clippy::module_name_repetitions)]
 
 pub mod errors;