feat: implement EditorSaveContext and integrate save functionality in PlateEditor and FixedToolbarButtons

surfsense_web/components/editor/editor-save-context.tsx

@@ -0,0 +1,25 @@
+'use client';
+
+import { createContext, useContext } from 'react';
+
+interface EditorSaveContextValue {
+  /** Callback to save the current editor content */
+  onSave?: () => void;
+  /** Whether there are unsaved changes */
+  hasUnsavedChanges: boolean;
+  /** Whether a save operation is in progress */
+  isSaving: boolean;
+  /** Whether the user can toggle between editing and viewing modes */
+  canToggleMode: boolean;
+}
+
+export const EditorSaveContext = createContext<EditorSaveContextValue>({
+  hasUnsavedChanges: false,
+  isSaving: false,
+  canToggleMode: false,
+});
+
+export function useEditorSave() {
+  return useContext(EditorSaveContext);
+}
+