Update Photos API

Since there is a body to the photos api it should be a post for now.
Also updated the response to separate files and directories.

src/files.rs

@@ -9,7 +9,9 @@ pub fn list_files(dir: PathBuf) -> io::Result<Vec<PathBuf>> {
         .filter(|entry| is_image_or_video(&entry.path()) || entry.file_type().unwrap().is_dir())
         .map(|entry| entry.path())
         .map(|path: PathBuf| {
-            let relative = path.strip_prefix(dotenv::var("BASE_PATH").unwrap()).unwrap();
+            let relative = path
+                .strip_prefix(dotenv::var("BASE_PATH").unwrap())
+                .unwrap();
             relative.to_path_buf()
         })
         .collect::<Vec<PathBuf>>();