feat(material/core): create an MDC version of the pseudo-checkbox

[mmalerba]

Feature Description

Create a version of mat-pseudo-checkbox that is styled to look like the MDC-based mat-checkbox

Use Case

Apps that use both a mat-checkbox and mat-pseudo-checkbox will need a version with the MDC styling in order to have a consistent feel across their app

[angular-robot]

This feature request is now candidate for our backlog! In the next phase, the community has 60 days to upvote. If the request receives more than 20 upvotes, we'll move it to our consideration list.

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[angular-robot]

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