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

SiriDB/siridb-server is built on the following main stack:

• Python – Languages
• C lang – Languages
• Ubuntu – Operating Systems
• Shell – Shells
• GitHub Actions – Continuous Integration
• Docker – Virtual Machine Platforms & Containers

Full tech stack here

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

Get the code:

## Tech Stack
SiriDB/siridb-server is built on the following main stack:

- [Python](https://www.python.org) – Languages
- [C lang](http://en.wikipedia.org/wiki/C_(programming_language)) – Languages
- [Ubuntu](http://www.ubuntu.com/) – Operating Systems
- [Shell](https://en.wikipedia.org/wiki/Shell_script) – Shells
- [GitHub Actions](https://github.com/features/actions) – Continuous Integration
- [Docker](https://www.docker.com/) – Virtual Machine Platforms & Containers

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

---

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

Tech Stack

SiriDB/siridb-server is built on the following main stack:

• Python – Languages
• C lang – Languages
• Ubuntu – Operating Systems
• Shell – Shells
• GitHub Actions – Continuous Integration
• Docker – Virtual Machine Platforms & Containers

Full tech stack here

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

Get the code:

## Tech Stack
SiriDB/siridb-server is built on the following main stack:

- <img width='25' height='25' src='https://img.stackshare.io/service/993/pUBY5pVj.png' alt='Python'/> [Python](https://www.python.org) – Languages
- <img width='25' height='25' src='https://img.stackshare.io/no-img-open-source.png' alt='C lang'/> [C lang](http://en.wikipedia.org/wiki/C_(programming_language)) – Languages
- <img width='25' height='25' src='https://img.stackshare.io/service/3511/cof_orange_hex.jpg' alt='Ubuntu'/> [Ubuntu](http://www.ubuntu.com/) – Operating Systems
- <img width='25' height='25' src='https://img.stackshare.io/service/4631/default_c2062d40130562bdc836c13dbca02d318205a962.png' alt='Shell'/> [Shell](https://en.wikipedia.org/wiki/Shell_script) – Shells
- <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/586/n4u37v9t_400x400.png' alt='Docker'/> [Docker](https://www.docker.com/) – Virtual Machine Platforms & Containers

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