Assets support WIP

refs #37

frontend/src/app/services/assets.service.ts

@@ -0,0 +1,29 @@
+import { Injectable } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { ReplaySubject } from 'rxjs';
+import { environment } from 'src/environments/environment';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class AssetsService {
+  network = environment.network;
+
+  assetsMinimal$ = new ReplaySubject<any>(1);
+
+  constructor(
+    private httpClient: HttpClient,
+  ) {
+    if (this.network === 'liquid') {
+      this.getAssetsMinimalJson$();
+    }
+  }
+
+  getAssetsMinimalJson$() {
+    this.httpClient.get('/assets/assets.minimal.json')
+    .subscribe((data) => {
+      console.log(data);
+      this.assetsMinimal$.next(data);
+    });
+  }
+}