Feature/lab3

[MMenshikh]

Goal

The goal of this PR is to implement and demonstrate secure development practices:

• SSH commit signing for ensuring commit authenticity and integrity
• Pre-commit secret scanning to prevent accidental leaks of sensitive data

Changes

• Added SSH commit signing
• Configured Git to use SSH for signing commits
• Implemented a pre-commit hook for secret scanning
• Tested the pre-commit hook with fake AWS keys

Testing

• SSH Commit Signing: Verified commits are signed and show a "Verified" badge in GitHub/GitLab
• Pre-commit Secret Scanning: Added a fake AWS key to test the hook; commit was blocked until the secret was removed

Artifacts & Screenshots

• Screenshot of the "Verified" badge for signed commits
• Logs from the pre-commit hook blocking a commit with a secret

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Checklist

• Clear PR title
• Documentation updated if needed
• No secrets or large temporary files