I am one of the maintainers of an enhanced open source statistics extension for PostgreSQL; pg_stat_monitor.
PGDG is already providing RPM packages for pg_stat_monitor. This is a request to kindly make it available via the PGDG's apt repositories. The project is currently in Beta, but about to go GA within the next 4-6 weeks.
Currently, we are building the Debian packages for our internal distribution, however, the process may be different in case of PGDG. Following is the project GitHub URL and Debian packaging path within the sources: