feat(bridge): add wifi/serial bridge runtime and UI

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/bridge_uart_sample.py

@@ -0,0 +1,16 @@
+from machine import UART, Pin
+import time
+
+#set baudrate closest to 1000000
+baudrate = 921600
+uart = UART(1, baudrate=baudrate, tx=Pin(2), rx=Pin(3))
+
+print("Sending 'Hello, World!'")
+uart.write(b'Hello, World!')
+while True:
+    if uart.any():
+        data = uart.read()
+        print(data)
+        uart.write(data)
+    else:
+        time.sleep(0.01)