Memory-Safe WebP Decoding

wpd is a new WebP decoder written in Rust that offers both improved memory safety and superior performance compared to libwebp, addressing vulnerabilities like the widely-exploited CVE-2023-4863. The decoder achieves 1.19-3.19x faster performance depending on threading mode and WebP type, while maintaining feature parity with libwebp and allowing compilation without unsafe assembly code for maximum security. wpd represents a significant advancement in hardening image processing libraries that handle untrusted data across operating systems and browsers.