Improve readability of Coalesce() with large number of expressions

From Discord user:

Request for N1QL/SQL++ to have an infix operator for Coalesce to make things easier. It could use common syntax for nullish coalescing in other languages. For example, foo.bar ?? "default value" instead of Coalesce(foo.bar, "default value"). When you need to use Coalesce on a large number of expressions in a query, it tends to reduce readability