[Pg-kit] Add pg_stat_statements extension support

[aaijazi]

Summary

Add support for pg_stat_statements extension filter in drizzle-kit to automatically exclude pg_stat_* tables from introspect and push operations.

Changes

• Extended extensionsFilters type to accept 'pg_stat_statements'
• Updated getTablesFilterByExtensions() to filter !pg_stat_* tables
• Updated Zod validation schemas to accept the new extension type
• Refactored extension filter logic to support multiple extensions simultaneously
• Added comprehensive unit tests covering all scenarios
• Added TSDoc documentation for the feature

Usage Example

import { defineConfig } from 'drizzle-kit'

export default defineConfig({
  dialect: "postgresql",
  extensionsFilters: ["postgis", "pg_stat_statements"],
})

Testing

Created new test file drizzle-kit/tests/extensions.test.ts with tests for:

• Individual extension filters (postgis, pg_stat_statements)
• Multiple extensions combined
• No extension filters
• PostgreSQL-only dialect behavior

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