[S2S] Add Test Mode to the s2s activation script

[SORMAS-JanBoehme]

Feature Description

When activating S2S a python script needs to be run in order to align the infractructure data with central data. Depending on the status of the systems infrastructure data some problems may occur (i.e. when multiple communities or districts exist with the same name and external ID). So we should have a way to test the outcome without actually changing anything.

Proposed Change

Add a test mode to the python script that simulates every change without actually performing any changes in the database and creates a log file with every problems that have been encountered.

Acceptance Criteria

Implementation Details

Additional Information

@JonasCir @SahaLinaPrueger