sql: Added telemetry for pg_catalog and information_schema tables access

[mnovelodou]

Previously, when querying a not implemented table it was tracket by telemetry
This was inadequate because when adding these tables as empty tables we no longer capture the access of these tables that are empty and unsupported
To address this, this patch adds telemetry to track queries at pg_catalog and
information_schema existing tables

Release note (sql change): Added telemetry to track usage of pg_catalog and
information_schema tables

Fixes #58732

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[cockroach-teamcity]

This change is 

[blathers-crl]

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[solongordon]

Glad this was straightforward! LGTM pending a couple minor changes.

Reviewed 1 of 4 files at r1.
Reviewable status: complete! 0 of 0 LGTMs obtained (waiting on @mnovelodou)

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pkg/sql/sqltelemetry/virtual_schema.go, line 19 at r1 (raw file):

)

const getVirtualSchemaEntry = "sql.virtual_schema.get_virtual_table_entry.%s.%s"

Let's name this sql.schema.get_virtual_table.%s.%s.

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pkg/sql/sqltelemetry/virtual_schema.go, line 22 at r1 (raw file):

// trackedSchemas have the schemas that we track by
// telemetry.

Nit: We usually wrap comments at 80 chars.

[mnovelodou]

Reviewable status: complete! 0 of 0 LGTMs obtained (waiting on @solongordon)

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pkg/sql/sqltelemetry/virtual_schema.go, line 19 at r1 (raw file):

Previously, solongordon (Solon) wrote…

Let's name this sql.schema.get_virtual_table.%s.%s.

Done.

[solongordon]

bors r+

[craig]

Build succeeded:

• GitHub CI (Cockroach)