Add initial project files and implement LED control via UART commands

uart.py

@@ -0,0 +1,16 @@
+import machine
+import utime
+
+uart = machine.UART(1)
+
+uart.write("hello")  # Send "hello" over UART
+utime.sleep(0.5)
+
+
+
+while True:
+    if uart.any():
+        line = uart.readline()
+        print(line)
+
+