💻 More microbit

[rmagedon97]

I'll be adding more functionality to the Microbit button

How to test Enable the MICROBIT_FEATURE to true to show the Microbit button. When clicked a hex file will be downloaded.

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• [ ] Contains one of the PR categories in the name
• [ ] Describes changes in the format above
• [ ] Links to an existing issue or discussion
• [ ] Has a "How to test" section

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