Add dynamodb local util and lib

[gmrabian]

Summary

Since our data goes through some processing before storing it in the database we will use the AWS database for local development. This saves time in ensuring both local and deployed instances go through a similar seeding process.

• Adds a utility/ folder in our repo with tools for interacting with dynamodb, locally and deployed
• Adds necessary packages
• Adds documentation

Fixes #23

Type of change

Please delete options that are not relevant.

• [x] New feature (non-breaking change which adds functionality)
• [x] This is a documentation update

How To Test

Temporarily modify your PageHeader as follows

import dynamoClient from "../utils/dynamodb-lib";

export const PageHeader = async () => {
  const params = {
    TableName: "institutions",
    Key: { institutionId: 110608, recordType: "data" },
  };
  const response = await dynamoClient.get(params);
  console.log("response", response);
...

• Run yarn to install the latest dependencies
• Run yarn dev
• Once the app loads, verify your terminal (where you ran yarn dev) shows the output of the item you created

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
• [ ] I have added tests that fail without these changes
• [x] New and existing tests (unit, integration, accessibility) pass locally
• [x] Documentation updated

[gmrabian]

Closing and moving to #52 to resolve conflicts