feat: remoteResource support headers setting

doric-js/src/util/resource.ts

@@ -25,9 +25,18 @@ export class LocalResource extends Resource {
 }
 
 export class RemoteResource extends Resource {
+    headers?: Record<string, string>
+
     constructor(url: string) {
         super("remote", url)
     }
+
+    toModel() {
+        return {
+            ...super.toModel(),
+            headers: this.headers
+        }
+    }
 }
 
 export class Base64Resource extends Resource {