build(clippy): enable pedantic lints from code

When this is forgotten locally only the CI will notice this.
Now these lints are always performed with clippy.

Also cleanup the list of allowed lints and add future ones from
the nursery which could also already be implemented.

src/lib.rs

@@ -1,19 +1,18 @@
+#![forbid(unsafe_code)]
+#![warn(clippy::pedantic)]
 // TODO: remove and fix (or allow explicitly on the specific problem)
 #![allow(
-    clippy::large_enum_variant,
-    clippy::missing_const_for_fn,
     clippy::missing_errors_doc,
-    clippy::module_name_repetitions,
     clippy::must_use_candidate,
-    clippy::needless_collect,
-    clippy::new_without_default,
-    clippy::non_ascii_literal,
     clippy::single_match_else,
     clippy::struct_excessive_bools,
-    clippy::too_many_arguments,
     clippy::unreadable_literal,
-    clippy::use_self,
-    clippy::wildcard_imports
+
+    // from clippy::nursery
+    // clippy::derive_partial_eq_without_eq,
+    // clippy::option_if_let_else,
+    // clippy::significant_drop_tightening,
+    // clippy::use_self,
 )]
 
 #[cfg(any(feature = "http-client", feature = "async-http-client"))]