Added new onepage starter site content

[girishpanchal30]

Summary

I’ve added new default starter content from the onepage demo site.

Check before Pull Request is ready:

• I have written a test and included it in this PR
• I have run all tests and they pass
• The code passes when running the PHP CodeSniffer
• Code meets WordPress Coding Standards for PHP, HTML, CSS and JS
• Security and Sanitization requirements have been followed
• I have assigned a reviewer or two to review this PR (if you're not sure who to assign, we can do this step for you)

Closes https://github.com/Codeinwp/neve-pro-addon/issues/2846

[pirate-bot]

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[abaicus]

@girishpanchal30 At first sight, the added images total ~2.7MB. We should look into optimizing and resizing them as much as possible so we save space. Otherwise the code looks good.

[girishpanchal30]

Thank you for your review, @abaicus! I've uploaded the optimized images.

[vytisbulkevicius]

@girishpanchal30, I see this failing: https://github.com/Codeinwp/neve/actions/runs/11472457137/job/31925140856?pr=4310 can you check?