Remove the Any type + adjust syntax for maps/arrays

examples/maps.ion

members/lexers/src/assignments/keys.rs

members/lexers/src/assignments/primitive.rs

src/lib/builtins/exists.rs

src/lib/parser/assignments/actions.rs

src/lib/parser/assignments/checker.rs

src/lib/parser/statement/functions.rs

src/lib/parser/statement/parse.rs

src/lib/shell/assignments.rs