fix(tests): add package section to enable integration tests

[iamvirul]

Description

This PR adds a [package] section to the root Cargo.toml to enable running integration tests in tests/boot_tests.rs. Previously, the tests were not runnable because integration tests require an associated package.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Code refactoring
• Performance improvement
• Test addition or update
• Build system / CI changes
• Other (please describe):

Related Issues

Fixes the inability to run tests/boot_tests.rs integration tests.

Changes Made

Code Changes

Build System:

• Added [package] section to root Cargo.toml with name ferrous-kernel-tests
• Uses workspace-level metadata (version, edition, authors, license, repository)

Testing

Tests can now be run with:

cargo test --test boot_tests

Output:

running 3 tests
test test_boot_sequence_documented ... ok
test test_harness_works ... ok
test test_memory_region_types_documented ... ok

test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out

ADR Requirements

• This change requires an ADR
• This change does not require an ADR
• ADR status: N/A

Safety Considerations

• This PR contains unsafe Rust code
• This PR is security-critical
• This PR has no safety/security implications

Testing

• Unit tests added/updated
• Integration tests added/updated
• Manual testing performed
• Tested in QEMU (if applicable)
• All existing tests pass

Checklist

• Code follows the project's style guidelines
• Self-review of code completed
• Code is commented, particularly for complex logic
• Documentation updated (if applicable)
• No new warnings generated
• Tests added/updated and passing
• All unsafe code has safety comments
• Changes are backward compatible
• Commit messages follow the project's guidelines

Additional Context

The tests/boot_tests.rs file contains documentation tests describing memory region types and boot sequence stages.