Added changelog

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+For releases `< 1.0.0` minor version steps may indicate breaking changes.
+
+## [Unreleased] - YYYY-MM-DD
+
+### Added
+
+### Changed
+
+### Removed
+
+### Fixed
+
+### Security
+
+### Deprecated
+
+## [0.0.1] - 2023-04-13
+
+## [template] - YYYY-MM-DD
+
+### Added
+
+### Changed
+
+### Removed
+
+### Fixed
+
+### Security
+
+### Deprecated
+
+[Unreleased]: https://github.com/tum-gis/tum-gis-iot-stack-basic/compare/0.0.1...HEAD
+[0.0.1]: https://github.com/tum-gis/tum-gis-iot-stack-basic/releases/tag/0.0.1
+[template]: https://keepachangelog.com/en/1.0.0/