First working TCP SIA-DC09 logger. Logs to mariadb.

No frontend, just a backend with mariadb and a TCP server that parses SIA-DC09 protocol data.

How to run:
```
    1. Install docker and docker compose.
    2. Modify docker-compose.yml to fit your needs, remember to change passwords!
    3. Run "docker compose build --no-cache" in root directory.
    4. Run "docker compose up -d" to start
```
Current folder structure:
```
├── backend
│ └── tcp_sia_server.py
├── docker-compose.yml
├── Dockerfile
├── frontend
│ └── index.html
├── nginx
│ └── nginx.conf
├── README.md
├── requirements.txt
└── sia-tester.py
```