Add Embedded<T>

implementations/javascript/packages/core/src/embedded.ts

@@ -32,6 +32,10 @@ export function isEmbedded<T extends Embeddable>(v: Value<T>): v is T {
         && ((_v: T) => true)(v);
 }
 
+export class Embedded<T> {
+    constructor(public readonly value: T) {}
+}
+
 export class GenericEmbedded {
     generic: Value;