feat(init): release tat-agent from v0.1.12

Main feature includes:
- Support shell, powershell and python commands.
- Support both Linux and Windows.
- Report command output.
- Auto kill the timeout task.
- Cancel the specified task.

.gitignore

@@ -0,0 +1,14 @@
+/target
+.vscode/
+.idea/
+log
+install/tat_agent
+tat_agent
+install/tat_agent_*.zip
+install/tat_agent_*.tar.gz
+install/tat_agent_*install*
+
+# temp script generated by test.
+.*.sh
+*.exe
+install/*.exe

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+## [0.1.12] - 2021-11-16
+
+### Changed
+
+- Optimize executor logic.
+- Support task cancellation.
+- Remove speculate.
+
+## [0.1.11] - 2021-10-12
+
+### Changed
+
+- Agent support for windows.
+
+## [0.1.10] - 2021-10-12
+
+### Changed
+
+- Modify the backend domain.
+
+## [0.1.9] - 2021-09-18
+
+### Changed
+
+- Report `START_FAILED` during script file creating failed because of disk full or permission deny.
+- Fix some warning, replace the deprecated func.
+- Modify a test case of cache lib, make it more accurate.
+- Reduce some redundant log.
+
+## [0.1.8] - 2021-08-19
+
+### Changed
+
+- Reduce systemd restart seconds to 1s.
+
+## [0.1.7] - 2021-08-04
+
+### Changed
+
+- Optimized for preload environment.
+- Use `vendored` mode for building openssl, see: [openssl](https://docs.rs/openssl/0.10.35/openssl/#vendored).
+- Optimize Makefile for cross-compile.
+
+## [0.1.6] - 2021-06-28
+
+### Changed
+
+- Support agent run daemon tasks.
+
+## [0.1.5] - 2021-06-22
+
+### Added
+
+- Support set `username` for invocation task. 
+- Support preload environment variables before running task.
+- Add `err_info` to store the reason for task `START_FAILED`.
+
+## [0.1.4] - 2021-05-07
+
+### Added
+
+- Support containerize agent, used for E2E environment.
+- Support debug mode for mock vpc info, used for E2E environment.
+
+## [0.1.3] - 2021-04-25
+
+### Added
+
+- Report dropped bytes of output.
+- Add CHANGELOG & LICENSE.
+
+## [0.1.2] - 2021-01-05
+
+### Added
+
+- Add integration tests for HTTP API.
+
+### Changed
+
+- Do CheckUpdate 10s after the agent started.
+- Update install.sh to adapt some bash version which do not support [[ syntax.
+- Fix bug of finish time return 0 when start failed.
+
+## [0.1.1] - 2020-12-14
+
+### Added
+
+- Support install for CoreOS whose /usr is Read-only.
+
+### Changed
+
+- Report task start & finish support retry.
+- Optimize several sleep operations.
+- Fix sleep method in tokio, use await instead of thread sleep.
+- Fix bug, commands local saving directory recreate each month.
+- Set tat_agent auto-restart time to 5s by systemd.
+
+## [0.1.0] - 2020-11-16
+
+### Added
+
+- First release of TAT agent.
+- Including one WebSocket thread for task notify.
+- Including one HTTP thread for task query & report.
+- Including one On-time thread for some periodic & timer tasks.
+- Commands spawned as an independent process.
+

CODE_OF_CONDUCT.md

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+# TAT Agent Community Code of Conduct
+
+TAT Agent follows the [CNCF Code of Conduct](https://github.com/cncf/foundation/blob/master/code-of-conduct.md).

CONTRIBUTING.md

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+# Prepare
+
+- Rust
+
+Install Rust with command:
+```
+curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
+```
+See more at:
+https://www.rust-lang.org/learn/get-started
+
+- Rust target
+
+Add target if you need, such as x86_64-unknown-linux-musl to build static target on linux:
+```
+rustup target add x86_64-unknown-linux-musl
+```
+
+- IDE
+
+1. Linux command line;
+2. IntelliJ IDEA with Rust plugin;
+3. Visual Studio Code.
+
+# Build
+
+- Run directly
+
+cargo will run immediately after build.
+```
+make run
+```
+
+- Build static target
+
+cargo will only build the target.
+Need x86_64-unknown-linux-musl target added and docker installed.
+```
+make build
+```
+
+# Run
+
+After build, you can run tat_agent anywhere with:
+```
+# root user
+./tat_agent
+```
+The tat_agent will use flock() to lock the pid file /var/run/tat_agent.pid,
+to ensure only one tat_agent process can start success on one machine.
+The pid file will be auto unlocked after the tat_agent exit.
+So you do not need to modify the pid file manually.
+
+# Contribute
+
+You are welcome to report bug, or contribute from github via issue, pull request or any discussions.