The custom List<Pair<String, Any>> implementation of SnyggIdToValueMap
is removed in favor of the typealias for MutableMap<String, Any>. This
way we can work with normal map functions and have a more optimized
data-structure for our use-case.
The SnyggIdToValueMap.new() functions are replaced by a single
snyggIdToValueMapOf() function which allocates a new MutableMap.
The getOrThrow and getOrNull functions are modified to work with the
new underling map data-structure. The add function is a direct alias
to the putAll function.