add program 'Blink'

src/main.cc

@@ -1,17 +0,0 @@
-#include "daisy_seed.h"
-
-using namespace daisy;
-
-static DaisySeed hardware{};
-
-int main()
-{
-    hardware.Init();
-
-    while (true) {
-        hardware.SetLed(true);
-        hardware.DelayMs(100);
-        hardware.SetLed(false);
-        hardware.DelayMs(500);
-    }
-}

src/main_blink.cc

@@ -0,0 +1,16 @@
+#include "daisy_seed.h"
+
+using namespace daisy;
+
+static DaisySeed hw{};
+
+int main()
+{
+    hw.Init();
+    while (true) {
+        hw.SetLed(true);
+        hw.DelayMs(100);
+        hw.SetLed(false);
+        hw.DelayMs(500);
+    }
+}