fix: resolve issues with readme on npm

[fabio-nettis]

Description

This PR fixes issues with the readme file on npm (like the missing logo). I also added badges indicating the package size with links to bundlephobia.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[github-actions]

Thank you for contributing to TinyBus! We try to keep our bundle size as small as possible, here you can see the impact of your pull request to the main bundle.

📦 Main	🚀 PR	📁 Generated Files
8 kB	8 kB	index.mjs / index.d.ts

The difference between the current bundle and the one generated for your pull request is: 0 kB. Keep in mind that this is just an estimation and the actual difference might be smaller due to compression.