[R20-1533] Custom heading font

[jeffdowdle]

Issue: R20-1533

What I did

• Adds a CSS variable --rpl-type-font-family-heading to heading typography classes
• Falls back to the regular font

How to test

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

[netlify]

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[cypress]

Passing run #743 ↗︎

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Details:

feat(@dpc-sdp/ripple-ui-core): added css var for heading font
Project: ripple-framework	Commit: 5dbd7044cc
Status: Passed	Duration: 05:11 💡
Started: Sep 28, 2023 1:50 AM	Ended: Sep 28, 2023 1:56 AM

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