add some more structure

uNextcloud.py

 import ElementTree
 from urllib import urequest
-import sdcard
 import gc
 import uos
 
@@ -10,6 +9,18 @@ class uNextcloud:
     def __init__(self):
         self.sd_spi = machine.SPI(0, sck=machine.Pin(18, machine.Pin.OUT), mosi=machine.Pin(19, machine.Pin.OUT), miso=machine.Pin(16, machine.Pin.OUT))
         self.sd = sdcard.SDCard(sd_spi, machine.Pin(22))
+        self.username = None
+        self.password = None
         uos.mount(sd, "/sd")
         gc.collect() 
 
+    def set_auth(self, username, password):
+        self.username = username
+        self.password = password
+
+    def get_folder_items(self, folder_path):
+        pass
+    
+    def download_file_to_path(self, folder_path, file, destination_path):
+        pass
+