Initial commit: sap-intercompany-viewer

Frontend Angular 22 (standalone, signals, Material 3) para
sap-intercompany-api. Pantallas: log de eventos/intentos, CRUD de
databases, listado/alta/detalle de scenarios.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/app/app.html

@@ -0,0 +1,16 @@
+<mat-toolbar color="primary">
+  <span class="brand">
+    <mat-icon>sync_alt</mat-icon>
+    sap-intercompany-viewer
+  </span>
+  <nav class="nav-links">
+    <a mat-button routerLink="/dashboard" routerLinkActive="active">Dashboard</a>
+    <a mat-button routerLink="/log" routerLinkActive="active">Log</a>
+    <a mat-button routerLink="/scenarios" routerLinkActive="active">Escenarios</a>
+    <a mat-button routerLink="/databases" routerLinkActive="active">Bases</a>
+  </nav>
+</mat-toolbar>
+
+<main class="content">
+  <router-outlet />
+</main>