docs: add MohamedMBG as a contributor for code

[allcontributors]

Adds @MohamedMBG as a contributor for code.

This was requested by iluwatar in this comment

[skip ci]

[github-actions]

PR Summary

Adds MohamedMBG as a contributor for code. Updates the All Contributors configuration and the README to reflect the new contributor and increase the badge count.

Changes

File	Summary
.all-contributorsrc	- Appends a new contributor entry for MohamedMBG with login MohamedMBG, name BAGHDAD Mohamed, avatar URL, profile URL, and contributions: [code].
README.md	- Updates the All Contributors badge count from 411 to 412 and adds MohamedMBG to the contributors table with avatar and profile link.

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autogenerated by presubmit.ai

[github-actions]

✅ LGTM!

Review Summary

Commits Considered (2)

• 7d9e5b3: docs: update .all-contributorsrc [skip ci]
• f4b0ac6: docs: update README.md [skip ci]

Files Processed (2)

• .all-contributorsrc (1 hunk)
• README.md (2 hunks)

Actionable Comments (0)

Skipped Comments (3)

• .all-contributorsrc [3749-3758]

  maintainability: "Contributors entry consistency"

• README.md [9-9]

  enhancement: "Update All Contributors badge"

• README.md [612-612]

  readability: "UI consistency: contributor tile alt text"