Retrieve submission photo using its submission id in submission detail page

[Sujanadh]

What type of PR is this? (check all applicable)

• 🍕 Feature
• 🐛 Bug Fix
• 📝 Documentation
• 🧑‍💻 Refactor
• ✅ Test
• 🤖 Build or CI
• ❓ Other (please specify)

Related Issue

• Issue: Extract user photos from submissions and make available via S3 #1701

Describe this PR

This PR creates a new endpoint that retrieves the submission photos using the submission_id (instance_id) of the particular submission. This endpoint can be used in submission detail page to visualize the submission images for example user uploaded images in verification section (digitisation_form).

• endpoint example : https://api.dev.fmtm.hotosm.org/submission/get-submission-photo?submission_id=uuid%3A55cd4d36-8cbc-47e0-b48d-d0846e268c21

Response

{
  "s3_path": "http://s3.fmtm.localhost:7050/fmtm-data/1/24/uuid:55cd4d36-8cbc-47e0-b48d-d0846e268c21/1.jpeg"
}

Alternative Approaches Considered

Did you attempt any other approaches that are not documented in code?

Review Guide

Notes for the reviewer. How to test this change?

Checklist before requesting a review

• 📖 Read the FMTM Contributing Guide: https://github.com/hotosm/fmtm/blob/main/CONTRIBUTING.md
• 📖 Read the HOT Code of Conduct: https://docs.hotosm.org/code-of-conduct
• 👷‍♀️ Create small PRs. In most cases, this will be possible.
• ✅ Provide tests for your changes.
• 📝 Use descriptive commit messages.
• 📗 Update any related documentation and include any relevant screenshots.

[optional] What gif best describes this PR or how it makes you feel?

[Sujanadh]

Updates:

• changed return response to list in case of multiple images in single submission in near future
• changed s3_path key to image_url

Updated Response:

{
  "image_url": [
    "http://s3.fmtm.localhost:7050/fmtm-data/1/24/uuid:55cd4d36-8cbc-47e0-b48d-d0846e268c21/1.jpeg"
  ]
}

[spwoodcock]

I made a small refactor to use path params instead, so submission detail should: /submission/{submission_id} and the photos list should be /submission/{submission_id}/photos.

I didn't get a chance to test, but as this doesn't break anything I'm going to merge and we can test it later 👍