Add logic for loading images from s3 per institution

[gmrabian]

Summary

• Add s3 lib for pulling items from s3
• Add/update tests
• Update institutions processing to get images
  • S3 image if available
  • image icon if not found

Fixes #80

Type of change

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

How To Test

• run yarn to install the new dependency
• export AWS credentials in your terminal
• run yarn dev
• load localhost:3000
• verify each institution has a unique image

Extra mile:

• Modify the institutions.ts code such that it always returns the empty image icon
• Verify the display shows the icon (styling addressed separately)

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
• [x] I have made corresponding changes to the documentation, including any applicable ADRs
• [x] My changes generate no new warnings
• [x] 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 e16bd09a and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (90% is the threshold).

This pull request will bring the total coverage in the repository to 100.0%.

View more on Code Climate.