Switch IAM QR rendering from qrcode to qrcode-rs 2.0.0 while keeping only the std and svg feature path enabled.
Set the release profile to a single codegen unit and disable release debuginfo as requested.
Verification:
- cargo info qrcode-rs --registry crates-io
- cargo tree -p rustfs-iam -e features
- CARGO_TARGET_DIR=/private/tmp/rustfs-target-qrcode-rs-profile-tuning cargo test -p rustfs-iam --locked
- cargo fmt --all --check
- git diff --check
Co-authored-by: heihutu <[email protected]>
