chart.plot_vline()

***Found this by accident hence keeping it here for future users***

In case user wants to add a vertical line across all the panels containing OHLC+RSI+MACD etc use the following:

```
chart = Chart(title='ticker', max_bars=max_bars)
chart.plot(plot_df, indicators)
chart.plot_vline("2024-07-25") # this will plot the vertical line across all the panels on the given date
chart.show()

```

