Add setgeopoint action

[lognaturel]

Blocked by #303

Description

The setgeopoint action can be triggered by the odk-instance-first-load, odk-new-repeat, xforms-value-changed events. It captures the best accuracy point in a 20s window after the event was fired.

ODK XForms spec: https://getodk.github.io/xforms-spec/#events

User-facing docs:

• start-geopoint

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Checklist

• Does it need UI/UX design?
  • Yes. Describe the UI/UX requirements or attach a Figma link in the "Design" section.
    Maybe. We could add some messaging around providing permissions. In Collect there's a notice that the location is being captured in the background
  • No
• Does it need API design?
  • Yes. Specify the endpoints, methods, or data structures needed.
    The client needs to be able to provide an implementation for getting user location and may need to know about the action in order to provide messaging.
  • No
• Does it need design around state flow?
  • Yes. Outline the state flow requirements.
    The client will need to know whether permissions have been granted
  • No
• Does it need a test plan?
  • Yes. Add the test plan as a comment in this task or attach the document.
  • No

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User Stories

• As a form designer,
  I want to capture form users' location in the background,
  so that I can audit their behavior or get locations of points of interest without requiring user intervention.

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Design

• Figma: [Insert URL]
• Design Docs: [Insert URL]

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Dependencies

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Additional Notes

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Related Issues

[latin-panda]

@alyblenkin Does this need UI/UX design?

[alyblenkin]

@latin-panda - yes, I believe so. I would need to design the warning to let the user know we are tracking and give them the ability to turn it off.

[lognaturel]

We can initially split out the engine work which throws an error if the frontend isn't available.

We still need design for that -- should it block form usage entirely or be a warning?