CPLAT-8036 Add useContext Hook

[joebingham-wk]

Motivation

Expose the useContext hook so that functional components can tap into it.

Changes

• Add useContext function
• Add an example
• Add tests

Testing

• Verify the example works as expected

Please Review @greglittlefield-wf @kealjones-wk @aaronlademann-wf @sydneyjodon-wk