T26 factory pattern

[dolsysmith]

This branch implements a separate API endpoint for requesting tokens. To review, just test the following functionality on https://test.orcid.library.gwu.edu and on the orcid-integration-test EC2 instance:

• Confirm that you are still able to connect an ORCiD sandbox account by browsing to the URL above.
• Log onto the EC2 instance.
• Create an API key by running the following command: docker exec -it orcid-integration-token-api-1 flask create-api-key [email protected]. (You can use your email address instead of mine.)
• Request the token for your ORCiD using the following CURL command, substituting the API key for the masked version, and your ORCiD for the masked ORCiD:

curl --header "Authorization: Apikey XXXX-XX-XXX-XXXX"  localhost:8081/api/get-token?orcid=XXXX-XXXX-XXXX-XXXX

• Confirm that an access token is returned.
• Run the following commands to extract all the tokens from the test database:

docker exec -it orcid-integration-flask-app-1 flask serialize-db /tmp/token-dump.json
docker cp orcid-integration-flask-app-1:/tmp/token-dump.json ./data/

• Run cat ./data/token-dump.json and confirm that the access token returned by the API matches the most recent access token associated with your ORCiD in the database.