pg_stat_monitor: PostgreSQL 15's pg_stat_statements new fetures support

[dutow]

Here is the list of new features added in PostgreSQL - 15. We need to add the support of these functionalities into pg_stat_monitor.

1. Allow pg_stat_reset_single_table_counters() to reset the counters of relations shared across all databases.
2. Add system view pg_stat_subscription_stats to report on subscriber activity.
3. Add counters for temporary file block I/O to pg_stat_statements.
4. Add JIT counters to pg_stat_statements.
5. Allow pg_stat_reset_single_table_counters() to reset the counters of relations shared across all databases.
6. A few new columns were added in pg_stat_statments.

• jit_functions
• jit_generation_time
• jit_inlining_count
• jit_inlining_time
• jit_optimization_count
• jit_optimization_time
• jit_emission_count
• jit_emission_time

https://jira.percona.com/browse/PG-540