Line name in hlines

Hello there!

@DanielGoldfarb , first of all, I wanted to thank you for the work done. it is very pleasant to use your module in work.

I recently started looking into the matplotlib and mplfinance packages, so I often run into problems that get resolved pretty quickly (thanks google).

Unfortunately, I could not think of or find a solution to the following problem:
I am building a graph, on this graph I display n lines, I would like to name each of these lines, or indicate their value on the y-axis.

As a result, I really want to get something like this:

p.s. Sorry if there are errors somewhere in the text (I used google translate)

L’issue nomina mplfinance e matplotlib, ma non indica alcun file sorgente, test o punto di ingresso da cui iniziare. Per prima cosa esamina come mplfinance crea ed espone hlines, quindi definisci il modo supportato per etichettare ogni linea o mostrare il suo valore sull’asse y; il lavoro è completo quando le etichette richieste compaiono nel grafico di esempio e sono coperte da test.