Add support for Multicam stabilisation

[Baskaphoto]

Apple Feedback Assistant ID: MISSING!

When you have a clip, you can stabilisation or slowmotion.
This can not when you edit on an multicam screen this can improve working time and is easy.

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[latenitefilms]

@Baskaphoto - Are you able to please edit your original post and fill out all the fields. Be as descriptive as possible so that it's more likely the Final Cut Pro team will take seriously. Please tell a story of WHY this feature is much needed.