feat: Add Astro Framework Support

[coderabbitai]

Summary

This issue tracks the addition of official Astro framework support to the SocialShareButton library.

Background

PR #33 (#33) introduced documentation updates for Astro support in the Quick Start Guide. This issue tracks the full implementation and integration of Astro framework support.

Tasks

• Implement Astro-compatible component or integration for SocialShareButton
• Add Astro-specific usage examples and documentation
• Handle server-side rendering (SSR) behavior specific to Astro
• Update the Quick Start Guide with Astro installation and usage instructions
• Test the integration with Astro projects

References

• PR: docs: add Astro framework support to Quick Start Guide #33
• Requested by: @kpj2006
• To be worked on by: @edengilbertus

[Muneerali199]

Hi sir,

I have implemented the Astro framework support as requested in this issue.

What was created:

• Added src/social-share-button-astro.astro component
• Includes SSR-safe initialization
• Supports all SocialShareButton options as props
• Works with Astro's client:load and other hydration directives

PR Link:

• PR feat: add Astro, Svelte, and Nuxt.js wrapper components #109: feat: add Astro, Svelte, and Nuxt.js wrapper components #109

Please review!