Refactor preview routes into separate module

frontend/src/app/previews.routing.module.ts

@@ -0,0 +1,39 @@
+import { NgModule } from '@angular/core';
+import { RouterModule, Routes } from '@angular/router';
+import { TransactionPreviewComponent } from './components/transaction/transaction-preview.component';
+import { BlockPreviewComponent } from './components/block/block-preview.component';
+import { AddressPreviewComponent } from './components/address/address-preview.component';
+import { MasterPagePreviewComponent } from './components/master-page-preview/master-page-preview.component';
+
+const routes: Routes = [
+  {
+    path: '',
+    component: MasterPagePreviewComponent,
+    children: [
+      {
+        path: 'block/:id',
+        component: BlockPreviewComponent
+      },
+      {
+        path: 'address/:id',
+        children: [],
+        component: AddressPreviewComponent
+      },
+      {
+        path: 'tx/:id',
+        children: [],
+        component: TransactionPreviewComponent
+      },
+      {
+        path: 'lightning',
+        loadChildren: () => import('./lightning/lightning-previews.module').then(m => m.LightningPreviewsModule)
+      },
+    ],
+  }
+];
+
+@NgModule({
+  imports: [RouterModule.forChild(routes)],
+  exports: [RouterModule]
+})
+export class PreviewsRoutingModule { }