ENH Allow underlying sensitivity plot to be configured with keyword arguments

[drewejohnson]

Is your feature request related to a problem? Please describe.
The SensitivityReader has a very nice plot method, but I've found it to be frustrating to configure and tweak at times. Currently, there is no way to manually add markers, colors, tweak the draw style (line, steps, dashed, etc)

Describe the solution you'd like
By allowing the user to pass arguments as keyword arguments through to ax.errorbar, we can easily allow this configuration

serpent-tools/serpentTools/parsers/sensitivity.py

Lines 408 to 409 in ee88bf4

	ax.errorbar(energies, yVals, yErrs, label=label,
	drawstyle='steps-post')

The patch should be merged into the main branch rather than develop since there's a lot going on currently with respect to 0.10.0 and #335, #400

Describe alternatives you've considered
The workaround is to extract and plot the data on your own, but we can do a little better

This is related to #417, but a smaller, more focused issue

[anthonybench]

I'd like to give this a try please!

[drewejohnson]

@anthonybench I'm so sorry for not following up on this. October was a wild month for me and some things fell through the cracks. Are you still interested in this?