Realtime connectivity sources

Connection statistics should be updated over time. To perform update different real-time data sources are being used:

1. Brazil realtime connection statistics api from simet.nic.br (https://api.simet.nic.br/)

2. Realtime measurements database to which the application has access. This database is being managed by UNICEF separate project and project connect application have read-only access to it.

`measurements` table structure in UNICEF realtime database