docs: update README.md and add more badges

Author: BBarisKilic

README.md

@@ -1,9 +1,15 @@
 # Audio Player Service
 
+<div align="center">
+
+[![audio_player_service][build_status_badge]][workflow_link]
+![coverage][coverage_badge]
 [![style: very good analysis][very_good_analysis_badge]][very_good_analysis_link]
 [![Powered by Mason](https://img.shields.io/endpoint?url=https%3A%2F%2Ftinyurl.com%2Fmason-badge)](https://github.com/felangel/mason)
 [![License: MIT][license_badge]][license_link]
 
+</div>
+
 This service wraps the [just_audio][just_audio_link] and provides secure usage of the plugin by handling exceptions.
 
 ## Installation 💻
@@ -61,6 +67,9 @@ open coverage/index.html
 ```
 
 [just_audio_link]: https://github.com/ryanheise/just_audio
+[workflow_link]: https://github.com/BBKDevelopment/Audio-Player-Service/actions/workflows/main.yaml
+[build_status_badge]: https://github.com/BBKDevelopment/Audio-Player-Service/actions/workflows/main.yaml/badge.svg
+[coverage_badge]: coverage_badge.svg
 [flutter_install_link]: https://docs.flutter.dev/get-started/install
 [github_actions_link]: https://docs.github.com/en/actions/learn-github-actions
 [license_badge]: https://img.shields.io/badge/license-MIT-blue.svg