Allow multiple Calculations in an column expression

[goldmedal]

Description

As #676 said, we should allow multiple calculations in a column expression. There are some todo test cases that should be enabled.

wren-engine/wren-modeling-rs/sqllogictest/src/test_context.rs

Lines 178 to 190 in daf5a60

	// TODO: allow multiple calculation in an expression
	// .column(
	// ColumnBuilder::new("customer_location", "varchar")
	// .calculated(true)
	// .expression("orders.customer_state || '-' || orders.customer_city")
	// .build(),
	// )
	// .column(
	// ColumnBuilder::new("customer_location", "varchar")
	// .calculated(true)
	// .expression("orders.customers.state || '-' || orders.customers.city")
	// .build(),
	// )