docs(EmptyState): add example to set icon size

[boaz0]

What:

closes #1434

Added an example of how to set the icon size through EmptyStateIcon.

In general, EmptyStateIcon also has color and title props that set the icon color and title.

[tlabaj]

@christiemolloy We don't have an example in core that matches this. Is it worth adding? Or maybe we If so, I can add an issue in core. The example is useful for the consumer.

[tlabaj]

@redallen This one did not deploy a preview.

[redallen]

CircleCI is pretty inconsistent building the Patternfly-4 docs, it's on my backlog of things to look into. In the future, just click "Rerun workflow" in CircleCI (I just kicked it off again for you).

[patternfly-build]

PatternFly-React preview: https://1436-pr-patternfly-react-patternfly.surge.sh

[christiemolloy]

IMO the example with the extra large icon should be removed because that icon size goes beyond the variables we currently have for icon sizing. I think an icon this large would be a question for design? and maybe its more of an image? I'll talk with design and get back to you.

UPDATE:
Checked with design and the icon size for empty state should always be 54px. So you can remove the example.

[tlabaj]

@christiemolloy Thanks for the feedback!

[tlabaj]

Closing this PR since the example is not consistent with core and the Empty state Icon should not be resized.