add placeholderView component

src/View/Components/placeholderView.tsx

@@ -0,0 +1,9 @@
+import * as React from "bloatless-react";
+
+export function PlaceholderView(text: string) {
+    return (
+        <div class="width-100 height-100 flex-column justify-center align-center">
+            <span class="secondary slide-up">{text}</span>
+        </div>
+    );
+}

src/View/Components/splitModal.tsx

@@ -9,7 +9,11 @@ export function SplitModal(
     navigationState?: React.State<any>,
 ) {
     const view = (
-        <div class="split-modal" toggle:extended={extendedStyle} toggle:primitive={navigationState == undefined}>
+        <div
+            class="split-modal"
+            toggle:extended={extendedStyle}
+            toggle:primitive={navigationState == undefined}
+        >
             <div>
                 <div class="scroll-area" children:set={leftView}></div>
             </div>