VA-13359: Add Trainings to PPMS facilities response

[maxx1128]

This pull request aims to make the array of PPMS training information available through the vets-api endpoint on the front-end.

Summary

• (Summarize the changes that have been made to the platform)
  • Making more PPMS data available on the front-end.
• (Which team do you work for, does your team own the maintenance of this component?)
  • I'm with the Facilities team.

Related issue(s)

Relates to department-of-veterans-affairs/va.gov-cms#13359

Testing done

Confirmed with backend and facilities team that testing can be done on the staging environment after merging.

Screenshots

Note: Optional

What areas of the site does it impact?

Facility Locator

Acceptance criteria

• Facilities and Backend team have approved merging and then testing on integrated environment through Argo terminal instance
• No error nor warning in the console.
• All tests are passing
• No sensitive information (i.e. PII/credentials/internal URLs/etc.) is captured in logging, hardcoded, or specs

Requested Feedback

(OPTIONAL)What should the reviewers know in addition to the above. Is there anything specific you wish the reviewer to assist with. Do you have any concerns with this PR, why?

[swirtSJW]

Code is untestable, but looks free from defects.

[holdenhinkle]

LGTM