feat(home): add drag file to chat input, add settings config API

src/lib/api/client.ts

@@ -83,6 +83,10 @@ export const getSettings = async (): Promise<Settings> => {
   return await fetchApi<Settings>('/api/settings')
 }
 
+export const getSettingsConfig = async (): Promise<{ notebookRoot: string }> => {
+  return await fetchApi<{ notebookRoot: string }>('/api/settings/config')
+}
+
 export const saveSettings = async (settings: Settings): Promise<Settings> => {
   return await fetchApi<Settings>('/api/settings', {
     method: 'POST',