v1.0.1

This pull request primarily focuses on a maintenance release for the ui_kit package. It updates the package's version to 1.0.1 and ensures that it is aligned with the latest v1.3.1 of its core dependency. Additionally, a changelog file has been added to provide clear documentation of these changes for future reference.

v1.0.0

build(deps): update core dependency to version 1.2.0

- Update core dependency ref from 828b984517edec069266579c624c7af9fbe0e2ac to v1.2.0
- Update resolved-ref in pubspec.lock