chore: add drizzle, zero, better auth example

[znycheporuk]

Summary

This pull request introduces a new example project that integrates Solid Start with the Zero Sync engine, Drizzle, and Better-Auth. The example aims to provide a streamlined starting point for developers new to these tools.

Motivation

While working on a personal project, I faced challenges setting up these tools for the first time. To help others avoid similar difficulties, I created this example to simplify the onboarding process and make it easier for developers to get started.

Notes

• There may be some css inconsistencies .
• This example may not represent best practices yet, but as I continue to work on my pet project, I plan to improve and refine it.

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Please review the changes and provide feedback.

Screen.Recording.2025-03-04.at.19.00.30.mp4

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