Add automatic entity timestamps

[elpete]

Summary

• add a global automaticTimestamps Quick module setting with per-entity metadata and component-variable overrides
• default timestamp attributes to createdDate and modifiedDate, while checking that mapped attributes exist before generating timestamp SQL
• automatically maintain timestamps for entity saves, bulk updates, and upserts
• add withoutAutomaticTimestamps() to QuickBuilder and preserve the setting across cloned builders/entities
• preserve explicit timestamp values and existing customizable timestampFields() behavior

Testing

• box testbox run runner=http://127.0.0.1:60442/tests/runner.cfm
• 631 passed, 0 failed, 3 skipped on Lucee 5.4.8.2