Update to microarch 0.3.0 and modernize compiler compatibility

[fpelliccioni]

Summary

This PR updates the project to use microarch 0.3.0 and migrates from the legacy information erasure pattern in package_id() to the modern compatibility() method recommended by Conan 2.0.

Changes

1. Dependencies

• ✅ Bump version to 4.1.0
• ✅ Update microarch from 0.2.1 to 0.3.0

2. Compiler Support

Now supporting:

• GCC: 13, 14, 15
• Clang: 13-20
• Apple Clang: 13-18

3. New ISA Extensions (from microarch 0.3.0)

GCC 14 extensions:

• AVX-VNNI-INT16, AVX10.1 (256/512-bit variants)
• SHA-512, SM3, SM4 cryptographic extensions
• APX_F (Advanced Performance Extensions)
• USERMSR (user mode MSR access)

GCC 15 extensions:

• AVX10.2
• AMX extensions: FP8, TF32, transpose, AVX512, MOVRS

4. Migration to Modern Compatibility Pattern

Before (information erasure):

# package_id() - grouped all GCC 13+ together
if v >= "13":
    self.info.settings.compiler.version = "GCC >= 13"

After (compatibility method):

# compatibility() - forward compatibility fallback
def compatibility(self):
    if compiler_version == "15":
        return [{"settings": [("compiler.version", "14")]},
                {"settings": [("compiler.version", "13")]}]

Benefits:

• ✅ Each compiler version generates its own package ID
• ✅ Newer versions can fallback to older binaries when needed
• ✅ Follows Conan 2.0 best practices
• ✅ Better cache efficiency without losing binary specificity

Testing

Tested with GCC 15 on GitHub Actions (current CI setup).

References

• Conan 2.0 Binary Compatibility
• compatibility() method