feat: implement tenant branding system and global toast notification service

src/app/shared/components/toast-container/toast-container.component.html

@@ -0,0 +1,24 @@
+<div class="toast-container position-fixed top-0 end-0 p-3">
+  @for (toast of toasts(); track toast.id) {
+    <div
+      class="toast show align-items-center border-0 shadow-sm"
+      [ngClass]="getToastBgClass(toast.type)"
+      role="alert"
+      aria-live="assertive"
+      aria-atomic="true"
+    >
+      <div class="d-flex p-2">
+        <div class="toast-body d-flex align-items-center flex-grow-1">
+          <i [class]="getToastIconClass(toast.type)" class="me-2 fs-5"></i>
+          <span>{{ toast.message }}</span>
+        </div>
+        <button
+          type="button"
+          class="btn-close btn-close-white me-2 m-auto"
+          aria-label="Cerrar"
+          (click)="dismiss(toast.id)"
+        ></button>
+      </div>
+    </div>
+  }
+</div>