Add component library to colour-picker solution

[wjamesw]

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Put an x in all the items that apply ([x], without spaces), make notes next to any that haven't been addressed.

• Bug fix?
• New sample?
• Related issues: fixes #X, partially #Y, mentioned in #Z
• Needs API permissions?
• Has other prerequisites? (E.g. requires a list, document library, etc.)

What's in this Pull Request?

Added a component library to the solution which includes the component. Updated readme to reflect use of component library to import component.

Checklist

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Put an x in all the items that apply ([x], no spaces), make notes next to any that haven't been addressed.

• My pull request affects only ONE sample.
• I have updated the README file.
• My README has at least one static high-resolution screenshot (i.e. not a GIF)
• My README contains complete setup instructions, including pre-requisites and permissions required

[Katerina-Chernevskaya]

Hi @wjamesw ,

Thank you for adding the component! I'm going to merge this.