Implement candle sticks

[geekscrapy]

This already looks awesome, I'm going to incorporate into a trading bot.
But I'd love to be able to plot some candles in the terminal!

[davidfokkema]

Nice idea! I need to complete #6 first, then I have date(time) axes available and can add the candlestick!

[froggleston]

I develop and maintain FTUI a Textual TUI for the freqtrade trading bot. I'd love to move away from textual-plotext due to the lack of recent updates, so if you need a tester for candlestick plots, I'm happy to help!

[davidfokkema]

@froggleston Your app looks cool! As soon as I have something in working order, I'll post here for you to try.