Adds content to menu toggle component examples.

[edonehoo]

Makes progress on patternfly/patternfly-org#2990

[patternfly-build]

Preview: https://patternfly-react-pr-8500.surge.sh

A11y report: https://patternfly-react-pr-8500-a11y.surge.sh

[nicolethoen]

@edonehoo i'm noticing that the split menu toggle with secondary styling has been removed from the docs. was that a deliberate choice?

[edonehoo]

So I was proposing the idea of removing it, but let me know what you think. My reasoning was that maybe the "Variant styles" example (formerly primary toggles) demonstrated the variant options that can be used, but if we want to be more explicit about secondary split button toggles (and/or secondary toggles, which I also removed) then I can add it back in. I like simplifying, but don't want to over-simplify!

[nicolethoen]

Would it be helpful/clear enough to add a row of toggles with secondary style below the row of toggles with primary style - all in the same example?

[edonehoo]

I think that approach would work! Or an "isSecondary" toggle checkbox? I could add to the example content to point out both primary and secondary variants are shown in the example - if we wanted to be sure it's clear.

[nicolethoen]

@edonehoo I made a few updates to rearrange the example code a little. WDYT?

[thatblindgeye]

The examples are looking good!

Regarding the convo about showing the different variants with split button examples, I think either approach could work (showing split button with the variants vs just mentioning that in the description). Since currently the split examples show the primary and secondary variant, we should probably also update the "Split button toggle with checkbox" example to match as well (instead of showing the disabled/collapsed/expanded states). The "Variant styling can be applied to split button toggles..." verbiage could then be moved to that example instead of the "Split button with text label" example.

[mcarrano]

Looks good to me. Thanks @edonehoo !

[tlabaj]

Can we rename this to MenuToggleTypeahead for consistency.

[tlabaj]

Great work Erin! LGTM