Explicit references to ambient module declaration files

Without these, projects using the output modules did not automatically pick up the typescript declarations.

typescript-declarations/carp-kotlin/index.ts

@@ -1,3 +1,4 @@
+/// <reference path="kotlin-kotlin-stdlib.d.ts" />
 import extend from "@cachet/kotlin-kotlin-stdlib"
 
 

typescript-declarations/carp-kotlinx-datetime/index.ts

@@ -1,3 +1,4 @@
+/// <reference path="Kotlin-DateTime-library-kotlinx-datetime-js-ir.d.ts" />
 import extend from "@cachet/Kotlin-DateTime-library-kotlinx-datetime-js-ir"
 
 

typescript-declarations/carp-kotlinx-serialization/index.ts

@@ -1,3 +1,5 @@
+/// <reference path="kotlinx-serialization-kotlinx-serialization-core.d.ts" />
+/// <reference path="kotlinx-serialization-kotlinx-serialization-json.d.ts" />
 import extendCore from "@cachet/kotlinx-serialization-kotlinx-serialization-core"
 import extendJson from "@cachet/kotlinx-serialization-kotlinx-serialization-json"