feat: added types to Link component

[SunnyJohal]

Closes #13561

Added typescript types to Link component.

Changelog

New

• Added typescript types to Link component.

Changed

• File extensions from .js to .tsx

Removed

• n/a

Testing / Reviewing

• Run storybook, navigate to link component and check that it is still rendering.
• Run unit tests

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[tay1orjones]

Thanks! Just one small change needed

[andreancardona]

Thank you so much for this - looks good!

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[carbon-bot]

Hey there! v11.31.0 was just released that references this issue/PR.