Implement "FAB-Single Sheet Menu" v2 component

[traviskaufman]

• Spec reference: https://material.google.com/components/buttons-floating-action-button.html#buttons-floating-action-button-transitions
• Motion video mock: https://material-design.storage.googleapis.com/publish/material_v_8/material_ext_publish/0B8v7jImPsDi-d09QRUZzVUdMSFk/components-buttons-fab-transition_card_01.webm
• Implement Proper transitions between FAB and Single Sheet Menu
• Add correct Keyboard A11y

There are internal motion mocks for these transitions that I can get when it comes time to implement.

[sfdexter]

Superceded by material-components/material-components-web#35