PG-564: Added a column to display bind variables when used with the n…

[kayform]

…ormalized_query option.

When collecting data for monitoring, display it as placeholders using the pgsm_normalized_query option.
If bind parameter and "normalized query are retrieved together as attached the image, it would be more useful for query performance analysis.

[ibrarahmad]

Please add some test cases for that.

[ibrarahmad]

pg_stat_monitor-1.0-2.0.sql need to be updated

[it-percona-cla]

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2 out of 3 committers have signed the CLA.

✅ kayform
✅ ksjj97inzent
❌ snsjeong

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