feat: add changelog

Author: pplmx

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/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+### Added
+
+### Changed
+
+### Fixed
+
+## [0.1.0-beta] - 2022-09-21
+
+### Added
+
+- cpp project distinguishes static and dynamic
+- cpp project distinguishes binary and library
+- add Dockerfile for each startup project
+- add example project [x-pt/example](https://github.com/x-pt/example)
+- :sparkles: support python project # THE VERY BEGINNING
+- :sparkles: support golang project # THE VERY BEGINNING
+- :sparkles: support cpp project    # ALMOST DONE
+- :earth_asia: `cargo generate gh:x-pt/template`

CODE_OF_CONDUCT.md

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+# Code of Conduct
+
+This project adheres to the Rust Code of Conduct, which can be found [here](https://www.rust-lang.org/conduct.html).