Add use of AWS Secrets Manager to NextJS app in order to get JWT Secret

[jupiter007]

We need a secure way to access the JWT Secret between the NextJS app and the backend NodeJS Express server. The best option appears to be AWS Secrets Manager. It is very secure, and allows us to rotate out the secret.

The frontend implementation will most likely be done using the aws-sdk package.

Example:

const AWS = require('aws-sdk');

const getSecret = async (secretName) => {
    const client = new AWS.SecretsManager({
        region: 'us-west-2'
    });
    const data = await client.getSecretValue({SecretId: secretName}).promise();

[jupiter007]

Blocked by this ticket: CDLUC3/dmsp_aws_prototype#153