Create dzver-deployment-test.php with dzver_deployment_test function

[Copilot]

This PR adds a new PHP file for deployment testing purposes as requested.

Changes

Created dzver-deployment-test.php containing:

• A dzver_deployment_test() function that outputs "hello, world"
• The function is defined but not called within the file
• Includes proper PHPDoc comments for documentation

Testing

• ✅ PHP syntax validation passed
• ✅ Function manually verified to output "hello, world" correctly
• ✅ Security scan completed with no issues

The file is ready for deployment testing and can be included in other parts of the application as needed.

Original prompt

Create one php file called dzver-deployment-test.php with one function, called dzver_deployment_test() that outputs hello, world. That function will not be called, and will simply exist in the file.

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