add Chapter10

Chapter10/lambdas/app/src/main_std_function_command_pattern.cpp

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+#include <cstdint>
+#include <cstdio>
+
+#include <stm32f072xb.h>
+
+#include <hal.hpp>
+#include <uart_stm32.hpp>
+
+#include <retarget.hpp>
+
+#include <algorithm>
+#include <array>
+
+#include <gpio_stm32.hpp>
+
+int main()
+{
+    hal::init();
+
+    hal::uart_stm32 uart(USART2);
+    uart.init();
+
+    retarget::set_stdio_uart(&uart);
+
+    const hal::gpio_stm32<hal::port_a> button1(hal::pin::p4, [](){
+        printf("Button1 pressed!\r\n");
+    });
+
+    const hal::gpio_stm32<hal::port_a> button2(hal::pin::p5, [](){
+        printf("Button2 pressed!\r\n");
+    });
+    
+    while(true)
+    {
+    }
+}