Add-version-flag-and-embed-build-metadata-in-the-CLI-binary

[bakarezainab]

Description

This PR adds a comprehensive --version flag to the sanctifier CLI and embeds build metadata directly into the binary to assist with production debugging. It also ensures that the version is consistently reported in JSON outputs and validated at compile time.

Key Changes:

• Build Metadata Embedding: Integrated vergen to capture exact commit SHA, commit date, build date, target triple, and rustc version at compile time.
• Custom Version Flag: Updated the CLI to print a detailed, multi-line version report when --version is invoked.
• JSON Consistency: Added a mandatory sanctifier_version field to all JSON reports generated by the analyze command.
• Version Validation: Added a build.rs script that validates the CARGO_PKG_VERSION against a strict SemVer regex pattern during compilation, preventing builds with invalid version tags.

Fixes #313

Type of change

Please delete options that are not relevant.

• 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)
• This change requires a documentation update

How Has This Been Tested?

• Test A

sanctifier 0.1.0
Commit: e4261b58749faa833b1b375e44398e3b1baa103c (2026-02-26)
Build date: 2026-03-28
Target: x86_64-unknown-linux-gnu
Built with: rustc 1.93.0

• Test B
  Ran sanctifier analyze [path] --format json Expected Result: Every report contains the "sanctifier_version": "0.1.0" field.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

close #313

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[Gbangbolaoluwagbemiga]

Please resolve conflicts @bakarezainab