Prevent duplicate sibling contact capture

[ChinHairSaintClair]

Is your feature request related to a problem? Please describe.
Currently, there appears to be no built-in deterrent against creating records with names similar to existing siblings.

Describe the solution you'd like
Prevent duplicate place/person creation and display possible duplicates for consideration. On record submission (through create or edit flow), we want to show the possible duplicate items to our user. They can then navigate to the possible duplicate item via a link, and proceed with record changes there, or circumvent the duplicate check & proceed with record submission.

Describe alternatives you've considered
Despite improving our search functionality, and training the CHWs to use it, usage of the search feature before creating new records remains low, leading to frequent duplicates.

Additional context
We noticed that our CHWs either forget they've previously captured items or miss previously captured items due to it being slightly mistyped. This has resulted in quite a few duplicate records being created on all user created levels of our hierarchy. We want to fix this at the source before tasks are rolled out to make sure no unnecessary/incorrect tasks fill up our CHWs worklist. This will naturally also improve the accuracy of our data for reporting purposes.

We have a working prototype that we will soon upstream, which can produce the following:

Please see the following related discussions for more info:
https://forum.communityhealthtoolkit.org/t/mitigate-duplicate-data-capture/3313
#6363

As a "damage control" step, as discussed with the medic team, we plan to use Databricks (our tool primarily responsible for pulling couchDB data into our community database0 to also push "flags" to potential duplicate items. That will, in turn, cause tasks to trigger on the app. CHWs are expected to then confirm/deny possible duplicate and determine what should happen to the record (delete, merge, other).