Create tech stack docs (techstack.yml and techstack.md)

[stack-file]

Adding tech stack documentation to allow anyone to easily see what is being used in this repo without digging through config files. Two files are being added: techstack.yml and techstack.md. techstack.yml contains data on all the technologies being used in this repo. techstack.md is a visualization of the YML file and displays the tech stack data in a pretty Markdown file.

💡 Protip: techstack.md contains a comment at the top of the file that the following README snippet (with and without the logos) at the top of the file as a comment:

<--- Readme.md Snippet without images Start --->

Tech Stack

Clivern/Racter is built on the following main stack:

• Gradle – Java Build Tools
• Java – Languages
• SLF4J – Log Management
• Logback – Log Management
• GitHub Actions – Continuous Integration
• Travis CI – Continuous Integration

Full tech stack here

<--- Readme.md Snippet without images End --->

Get the code:

## Tech Stack
Clivern/Racter is built on the following main stack:

- [Gradle](https://www.gradle.org/) – Java Build Tools
- [Java](https://www.java.com) – Languages
- [SLF4J](https://slf4j.org/) – Log Management
- [Logback](https://logback.qos.ch/) – Log Management
- [GitHub Actions](https://github.com/features/actions) – Continuous Integration
- [Travis CI](https://travis-ci.com/) – Continuous Integration

Full tech stack [here](/techstack.md)

---

<--- Readme.md Snippet with images Start --->

Tech Stack

Clivern/Racter is built on the following main stack:

• Gradle – Java Build Tools
• Java – Languages
• SLF4J – Log Management
• Logback – Log Management
• GitHub Actions – Continuous Integration
• Travis CI – Continuous Integration

Full tech stack here

<--- Readme.md Snippet with images End --->

Get the code:

## Tech Stack
Clivern/Racter is built on the following main stack:

- <img width='25' height='25' src='https://img.stackshare.io/service/975/gradlephant-social-black-bg.png' alt='Gradle'/> [Gradle](https://www.gradle.org/) – Java Build Tools
- <img width='25' height='25' src='https://img.stackshare.io/service/995/K85ZWV2F.png' alt='Java'/> [Java](https://www.java.com) – Languages
- <img width='25' height='25' src='https://img.stackshare.io/service/2805/05518ecaa42841e834421e9d6987b04f_400x400.png' alt='SLF4J'/> [SLF4J](https://slf4j.org/) – Log Management
- <img width='25' height='25' src='https://img.stackshare.io/service/2923/05518ecaa42841e834421e9d6987b04f_400x400.png' alt='Logback'/> [Logback](https://logback.qos.ch/) – Log Management
- <img width='25' height='25' src='https://img.stackshare.io/service/11563/actions.png' alt='GitHub Actions'/> [GitHub Actions](https://github.com/features/actions) – Continuous Integration
- <img width='25' height='25' src='https://img.stackshare.io/service/460/Lu6cGu0z_400x400.png' alt='Travis CI'/> [Travis CI](https://travis-ci.com/) – Continuous Integration

Full tech stack [here](/techstack.md)