feat: integrate @tailwindcss/typography and enhance folder picker functionality

- Added @tailwindcss/typography dependency to package.json and tailwind.config.js.
- Updated FolderPicker.vue to include additional properties (isGitRepo, hasDocuments) for directories.
- Enhanced Sidebar.vue with folder creation and document handling features, including drag-and-drop functionality.
- Implemented createFolder and moveDocument mutations in gql.ts for managing folder and document operations.
- Added logic to handle folder creation and document creation prompts in Sidebar.vue.
- Updated the layout and interactions in Sidebar.vue to improve user experience.

frontend/src/lib/gql.ts

@@ -28,4 +28,19 @@ export async function gql<T = unknown>(
   return json.data as T
 }
 
+export async function createFolder(path: string): Promise<{ createFolder: boolean }> {
+  const query = `mutation CreateFolder($path: String!) { createFolder(path: $path) }`
+  return gql(query, { path })
+}
+
+export async function moveDocument(oldSlug: string, newSlug: string): Promise<{ moveDocument: boolean }> {
+  const query = `mutation MoveDocument($oldSlug: String!, $newSlug: String!) { moveDocument(oldSlug: $oldSlug, newSlug: $newSlug) }`
+  return gql(query, { oldSlug, newSlug })
+}
+
+export async function getFolders(): Promise<{ folders: string[] }> {
+  const query = `query GetFolders { folders }`
+  return gql(query)
+}
+