Create SECURITY.md for security policy and reporting

[mo74m3ed]

Added a security policy document outlining supported versions and vulnerability reporting.

Greptile Summary

The PR adds a root-level security policy document intended to describe supported versions and vulnerability reporting.

• Adds a supported-version matrix.
• Adds a vulnerability-reporting section.
• The document retains uncustomized template instructions and example values.

Confidence Score: 4/5

The PR is safe to merge from a runtime perspective, but the security policy should be customized before publication so it provides accurate support and reporting guidance.

The docs-only change cannot affect application execution, but the newly authoritative policy currently publishes example version data and omits the repository's existing private security contact.

Files Needing Attention: SECURITY.md

Important Files Changed

Filename	Overview
SECURITY.md	Adds the security policy, but its version and reporting sections remain template placeholders rather than actionable repository-specific guidance.

Prompt To Fix All With AI

### Issue 1
SECURITY.md:5-6
**Uncustomized security policy template**

The new policy retains template instructions and example version values while omitting the existing `security@salla.sa` reporting address, so readers cannot obtain accurate release-support or vulnerability-reporting guidance from the repository's dedicated security policy.

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For each issue above, determine whether it is valid and should be fixed. If so, fix it directly.

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[codacy-production]

Up to standards ✅

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_{TIP This summary will be updated as you push new changes.}

[mo74m3ed]