Andrew/add faq type

[AndrewSepic]

This PR introduces a new content type for Mapbox docs. The 'FAQ' content type.

• It adds a new Icon SVG and content Type to help-card-data.js
• Changes the order of the content types to put troubleshooting last.
• It also updates mbx-assembly-docs to unlock a new color for this new content type.

EDIT

• This PR also instroduces hover state and styling for the card.js component.

[chriswhong]

Just one question about remark-lint-mapbox. Looks good!

[chriswhong]

Does this need to be explicitly added here?

[AndrewSepic]

No, I believe this was left over from my forced update to remark-lint-mapbox in order to have access to the new content type. This packages is already a dependency of remark-config-docs but rather than wait for dependabot to push an updated release (24 hrs?) I ran npm i @mapbox/remark-lint-mapbox@latest --force and I believe that's what added this. I was following the release instructions here.

I've removed this in the my most recent commit and remark-config-docs should have the most recent version (if the former release process is still working)

[AndrewSepic]

@chriswhong Updates on this last PR. The changes needed to make the RightArrow icon available for use within the pkg/components folder ofg dr-ui may not be the best long term solution. Now an icon has to be considered a fundamental part of dr-ui and have an example and be included in docs/src/categories.json. I think the best approach here may be to keep this SVG inline within the card.js or put in place a a new folder strcuture & build process for including icon components in dr-ui without all the overhead that it has now. I want to leave this as is for now, but have created a Jira ticket to keep track of this.

Lastly, I had issues trying to work around the react/jsx-no-bind eslint rule that does not want arrow functions used as component props. I am not as competent with class based components and struggled to write a non arrow function and have it bind to the component instance and work.

I'm happy to pair on that with you to help me understand, or keep the src/components/card/card.js as is, using //eslint-ignore

[chriswhong]

LGTM, added a commit to avoid the arrow function/eslint ignore issue in card.js