Create and consume context api provider

[braxex]

Summary

We need state management for the app and will be using React's Context API. This PR adds the context provider as a wrapper around main app children to provide institution data throughout the app as needed.

Type of change

• [x] New feature (non-breaking change which adds functionality)

How To Test

n/a

Checklist:

• [x] My code follows the style guidelines of this project and has no linting errors
• [x] I have performed a self-review of my code
• [x] I have commented my code, particularly in hard-to-understand areas
• ~[ ] I have made corresponding changes to the documentation, including any applicable ADRs~
• ~[ ] My changes generate no new warnings~
• ~[ ] I have added tests that fail without these changes~
• [x] New and existing tests (unit, integration, accessibility) pass locally
• ~[ ] Documentation updated~
• ~[ ] If there are security concerns they are addressed or ticketed after being discussed~

[codeclimate[bot]]

Code Climate has analyzed commit b300c606 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 88.6% (80% is the threshold).

This pull request will bring the total coverage in the repository to 96.1%.

View more on Code Climate.