feat: add report content update endpoint and integrate Platejs editor for markdown editing

surfsense_web/components/ui/blockquote-node.tsx

@@ -0,0 +1,13 @@
+'use client';
+
+import { type PlateElementProps, PlateElement } from 'platejs/react';
+
+export function BlockquoteElement(props: PlateElementProps) {
+  return (
+    <PlateElement
+      as="blockquote"
+      className="my-1 border-l-2 pl-6 italic"
+      {...props}
+    />
+  );
+}