Construct a dict from arbitrary keyword args.

This function creates a dictionary (a key/value map). NOTE: In VQL dictionaries always have string keys. Sometimes key names contain special characters like dots etc, in that case you can use backticks to escape the name. For example:

SELECT dict(Foo="Bar", `Name.With.Dots`="Baz")
FROM scope()

See the to_dict() function to create dicts from a query with unpredictable key names.