feat: adds noop mappable, useful when a map is not required but can't be nil (#5)

Author: alekseizorin

noopMappable.go

@@ -0,0 +1,11 @@
+package os_query
+
+type noopMappable struct{}
+
+func (n *noopMappable) Map() map[string]interface{} {
+	return map[string]any{}
+}
+
+func NoopMappable() *noopMappable {
+	return &noopMappable{}
+}