clippy: suppress ptr_offset and missing_safety_doc warnings

Suppress two clippy warnings in bindgen-generated code:
- ptr_offset_with_cast: Generated code uses ptr::offset with usize->isize cast
- missing_safety_doc: Auto-generated unsafe functions lack safety documentation

These warnings are not actionable since the code is auto-generated by bindgen.

Also updated the top comment of the wolfcrypt-rs/src/bindings.rs
accordingly.

Author: gasbytes

wolfcrypt-rs/src/bindings.rs

@@ -1,8 +1,13 @@
 /*
- * These are used to suppress all the errors that rust complains
- * about our symbols and/or macro (since they don't follow rust's style
- * convention).
- * */
+ * Allow attributes to suppress warnings in bindgen-generated code.
+ * These warnings arise from:
+ * - Naming conventions that don't match Rust style (e.g. from C symbols)
+ * - Auto-generated unsafe code patterns
+ * - Type/casting patterns common in C FFI but discouraged in pure Rust
+ *
+ * Since this code is auto-generated, these warnings cannot be fixed manually
+ * and must be suppressed.
+ */
 #![allow(dead_code)]
 #![allow(non_upper_case_globals)]
 #![allow(non_camel_case_types)]
@@ -11,4 +16,6 @@
 #![allow(clippy::upper_case_acronyms)]
 #![allow(clippy::too_many_arguments)]
 #![allow(improper_ctypes)]
+#![allow(clippy::missing_safety_doc)]
+#![allow(clippy::ptr_offset_with_cast)]
 include!(concat!(env!("OUT_DIR"), "/bindings.rs"));