USB: Add usb uvc example

Closes https://github.com/espressif/esp-idf/issues/6493

examples/peripherals/usb/host/uvc/player.py

@@ -0,0 +1,37 @@
+# SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+# SPDX-License-Identifier: Unlicense OR CC0-1.0
+import socket
+
+import cv2
+import numpy as np
+
+frame_count = 0
+stream = bytearray()
+
+print('Connecting to server...')
+
+with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
+    sock.connect(('esp-cam.local', 2222))
+
+    print('Receiving data ')
+    while True:
+        data = sock.recv(4096)
+        if not data:
+            break
+        stream += data
+        print('.', end='', flush=True)
+
+        a = stream.find(b'\xff\xd8')
+        b = stream.find(b'\xff\xd9', a)
+
+        if a != -1 and b != -1:
+            jpg = stream[a:b + 2]
+            stream = stream[b + 2:]
+            buffer = np.frombuffer(jpg, dtype=np.uint8)
+            image = cv2.imdecode(buffer, cv2.IMREAD_COLOR)
+            cv2.imshow('Stream', image)
+            if cv2.waitKey(10) == 27:
+                exit(0)
+            frame_count += 1
+
+print('\nFrames received ', frame_count)