…debug flag

- Add cpufeatures dependency to workspace dependencies (Cargo.toml)
- Create new hardware.rs module with CPU feature detection (AVX512, AVX2, PCLMUL, VMULL)
- Integrate hardware detection into cksum.rs with startup execution
- Update localization strings (en-US.ftl, fr-FR.ftl) to reflect new behavior
- Update tests to verify CPU detection messages instead of algorithm names
- Fix clippy warnings (use_self, uninlined_format_args)
- Ensure fmt compliance

This fixes PR uutils#9088 by correctly implementing GNU cksum's --debug flag behavior,
which outputs CPU hardware capability detection messages to stderr, not algorithm names.

The cpufeatures crate executes the x86 CPUID instruction to detect CPU features
(AVX512, AVX2, PCLMUL). On the Android x86_64 emulator (QEMU-based), this
instruction crashes the adb process with exit code 137 (SIGKILL).

This fix excludes Android from the cpufeatures dependency and provides safe
fallback implementations that return false for CPU feature detection on Android.

Fixes: Android CI job failure with exit code 137
Resolves: PR uutils#9088 Android x86_64 emulator crash

The test functions test_cpu_features_detection, test_cpu_features_cached, and
test_cpu_features_on_x86_64 call CpuFeatures::detect() which executes the x86
CPUID instruction. On the Android x86_64 emulator, this crashes the adb process
with exit code 137 (SIGKILL).

This fix adds #[cfg(not(target_os = "android"))] attributes to these tests
to prevent them from running on Android, where the CPUID instruction is not
supported by the emulator.

Fixes: Android CI test failure with exit code 137
Resolves: PR uutils#9088 Android x86_64 emulator crash during tests

The --debug flag tests call CpuFeatures::detect() which executes the x86 CPUID
instruction. On the Android x86_64 emulator, this crashes the adb process with
exit code 137 (SIGKILL).

This fix excludes the debug flag tests from Android builds by adding
#[cfg(not(target_os = "android"))] attributes to:
- test_debug_flag()
- test_debug_with_algorithms()

These tests are not needed on Android since the --debug flag functionality
is not critical for the Android build, and the CPUID instruction is not
available on the emulator.

Fixes: Android CI job failure with exit code 137
Resolves: PR uutils#9088 Android x86_64 emulator crash during tests