Added example script for create_image_uploads and upsert_images GraphQL mutations

[denisahearn]

Why?

I want to demonstrate how to use the create_image_uploads and upsert_images GraphQL mutations

What?

• Adds api/upsert_images.rb, which shows how to use the create_image_uploads and upsert_images GraphQL mutations
• Created utils/upload.rb and moved file uploading functions to this file. Centralizes this logic for the example scripts to use.

Screenshot(s)

JIRA Link

No story

Code Review Strategy

QA Strategy

• Merge latest main

• Run this command on your local machine and verify on dev that images were uploaded to S3 and attached to the survey you specified:

FIELDAGENT_ACCESS_TOKEN=<Your FieldAgent API token> \
FIELDAGENT_SERVER=https://apidev.sentera.com \
IMAGES_PATH="../test_files" \
SURVEY_SENTERA_ID=<Your survey Sentera ID> \
FILE_EXT="*.jpeg" \
SENSOR_TYPE="RGB" \
ruby upsert_images.rb

[denisahearn]

You'll see that I moved these upload_file and upload_files methods out of the sample scripts into utils/upload.rb.