Segmented Control: Implement ControlValueAccessor to support Angular forms

[lydemann]

Which issue does this PR close?

This PR closes # (insert issue number here)
#3791

What is the new behavior?

Does this PR introduce a breaking change?

• Yes
• No

Are there any additional context?

Checklist:

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Reminders

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When the pull request has been approved it will be merged to develop by Team Kirby.