add badges

README.md

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 ![Tests](https://github.com/SkillDevs/electric_dart/actions/workflows/tests.yml/badge.svg)
 
+[![pub package](https://img.shields.io/pub/v/electricsql.svg?label=electricsql&color=blue)](https://pub.dartlang.org/packages/electricsql)
+[![pub package](https://img.shields.io/pub/v/electricsql_flutter.svg?label=electricsql_flutter&color=blue)](https://pub.dartlang.org/packages/electricsql_flutter)
+[![pub package](https://img.shields.io/pub/v/electricsql_cli.svg?label=electricsql_cli&color=blue)](https://pub.dartlang.org/packages/electricsql_cli)
+
 # Electric Dart ⚡🎯
 
 #### 🛠️ WORK IN PROGRESS 🛠️