docs: add CHANGELOG.md

Author: malhussan

CHANGELOG.md

@@ -0,0 +1,24 @@
+# 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).
+
+## [Unreleased]
+
+### BREAKING
+
+- Rename all occurences of spp to service_principal for more clarity.
+- Using submodules directly is only possible with Terraform v1.0 or above.
+
+### Added
+
+- Added CHANGELOG.md
+
+## [v0.1.0]
+
+- Initial Release
+
+[unreleased]: https://github.com/meshcloud/terraform-azure-meshplatform/compare/v0.1.0...HEAD
+[v0.1.0]: https://github.com/meshcloud/terraform-azure-meshplatform/releases/tag/v0.1.0