Plot the search space results
plot_tuner(tuner, height = NULL, width = NULL, type = "plotly")
A tuner object
height of the plot
width of the plot
Type parameter has 2 options:
* By default it uses `plotly`
* Second option is `echarts4r`
**Note** that `echarts4r` ignores width and height parameters
a list which contains a dataframe of results and a plot