PPA Collect key submission metadata (EXPOSUREAPP-4821) (#2474)

* data storage and collection

* collect data

* storage

* repository

* collect data

* collect data

* revert unrelated changes

* revert unrelated changes

* fix tests

* fix tests

* fix instrumentation tests

* review comments

* submitted at

* submitted at

* fix test

* fix test

Co-authored-by: harambasicluka <64483219+harambasicluka@users.noreply.github.com>