Need a view definition which produces pg_stat_statements compatible view

[jobinau]

A large number of PostgreSQL users / DBAs have tools and scripts prepared for pg_stat_statements. The lack of pg_stat_statement compatible view definition stands as the biggest obstacle for replacing the pg_stat_statements with pg_stat_monitor A standard view definition is documentation that could enable users to make the easy switches and thereby accelerate the adoption of pg_stat_monitor

[hqakhtar]

We should add a GUC, perhaps named "enable_pgss_compability". When enabled, it should create a "pg_stat_statements" compatible view with "CREATE EXTENSION". By default, this GUC should be set. There should be a separate SQL function that can create this compatible view later on.

[ImTheKai]

Will be tracked https://perconadev.atlassian.net/browse/PG-809