[lib] Add function to send reports

Summary:
Created a function to send reports to the reports service.
We support both single or multiple reports in one request.

Depends on D9041

Test Plan: Tested in the next diff.

Reviewers: kamil, michal, tomek, inka

Reviewed By: tomek

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D9042