[SD-207] Accordion slots

[waitingallday]

Issue: https://digital-vic.atlassian.net/browse/SD-207

What I did

• Support the use of slots in accordions, using the RplAccordionItem child wrapper e.g.

  <RplAccordion id="accordion1">
    <RplAccordionItem id="item1">
      <template #title>
        Title content here
      </template>
      <p>Body content here</p>
    </RplAccordionItem>
    <RplAccordionItem id="item2" :active="true">
      <template #title>
        Title content here
      </template>
      <p>Body content here</p>
    </RplAccordionItem>
  </RplAccordion>

• Note in the sample above, accordion content needs to be properly marked up i.e. <p>Body content here</p> not just text - the slot is handed to a RplContent component.

How to test

• Storybook

Checklist

For all PR's

• I've added relevant changes to the project Readme if needed.
• I've updated the documentation site as needed.
• I have added unit tests to cover my changes (if not applicable, please state why in a comment)

For new components only

• I have added a story covering all variants
• I have checked a11y tab in storybook passes
• Any events are emitted on the event bus

[cypress]

ripple-framework    Run #2230

Run Properties:   Passed #2230  •  621ea1a9ee: refactor(@dpc-sdp/ripple-ui-core): :recycle: use a single collector index

Project	ripple-framework
Branch Review	feat/sd-207-accordion-slots
Run status	Passed #2230
Run duration	09m 31s
Commit	621ea1a9ee: refactor(@dpc-sdp/ripple-ui-core): :recycle: use a single collector index
Committer	Jason Smith
View all properties for this run ↗︎

---

Test results
Failures	0
Flaky	0
Pending	0
Skipped	0
Passing	196
View all changes introduced in this branch ↗︎

[dylankelly]

Would be great to add cypress component test for both props and slot interfaces

[waitingallday]

Merging this now to get in the release, will followup to add the cypress component test separately