pybricksdev._vendored: create new folder for vendored files

This will help keep code where we are not the original authors sorted
and out of the way. We are planning on adding more, so start with the
ones we have already.

Author: dlech

pybricksdev/_dfu_create.py renamed to pybricksdev/_vendored/dfu_create.py

@@ -14,7 +14,8 @@
 
 from usb.core import NoBackendError, USBError
 
-from . import _dfu_upload, _dfu_create, resources
+from . import resources
+from ._vendored import dfu_upload, dfu_create
 from .ble.lwp3.bytecodes import HubKind
 
 FIRMWARE_ADDRESS = 0x08008000
@@ -167,7 +168,7 @@ def flash_dfu(firmware_bin: bytes, metadata: dict) -> None:
         try:
             # Determine correct product ID
 
-            devices = _dfu_upload.get_dfu_devices(idVendor=LEGO_VID)
+            devices = dfu_upload.get_dfu_devices(idVendor=LEGO_VID)
             if not devices:
                 print(
                     "No DFU devices found.",
@@ -187,22 +188,22 @@ def flash_dfu(firmware_bin: bytes, metadata: dict) -> None:
 
             # Create dfu file
             device = "0x{0:04x}:0x{1:04x}".format(LEGO_VID, product_id)
-            _dfu_create.build(outfile, [[target]], device)
+            dfu_create.build(outfile, [[target]], device)
 
             # Init dfu tool
-            _dfu_upload.__VID = LEGO_VID
-            _dfu_upload.__PID = product_id
-            _dfu_upload.init()
-            elements = _dfu_upload.read_dfu_file(outfile)
+            dfu_upload.__VID = LEGO_VID
+            dfu_upload.__PID = product_id
+            dfu_upload.init()
+            elements = dfu_upload.read_dfu_file(outfile)
 
             # Erase flash
             print("Erasing flash...")
-            _dfu_upload.mass_erase()
+            dfu_upload.mass_erase()
 
             # Upload dfu file
             print("Writing new firmware...")
-            _dfu_upload.write_elements(elements, True, _dfu_upload.cli_progress)
-            _dfu_upload.exit_dfu()
+            dfu_upload.write_elements(elements, True, dfu_upload.cli_progress)
+            dfu_upload.exit_dfu()
             print("Done.")
         except USBError as e:
             if e.errno != errno.EACCES or platform.system() != "Linux":
@@ -225,7 +226,7 @@ def flash_dfu(firmware_bin: bytes, metadata: dict) -> None:
 
                 dev_id = _get_vid_pid(dfu_util)
 
-                _dfu_create.build(outfile, [[target]], dev_id)
+                dfu_create.build(outfile, [[target]], dev_id)
 
                 exit(
                     call(