led blink example

* led blink example

* restore tests

* Update FURI_and_examples.md

applications/startup.h

@@ -1,13 +1,24 @@
 #pragma once
 
 #include "furi.h"
-#include "tests/test_index.h"
 
 typedef struct {
     FlipperApplication app;
     const char* name;
 } FlipperStartupApp;
 
+#ifdef TEST
+void flipper_test_app(void* p);
+#endif
+
+void application_blink(void* p);
+
 const FlipperStartupApp FLIPPER_STARTUP[] = {
-    {.app = flipper_test_app, .name = "test app"}
+    #ifdef TEST
+    {.app = flipper_test_app, .name = "test app"},
+    #endif
+
+    #ifdef EXAMPLE_BLINK
+    {.app = application_blink, .name = "blink"},
+    #endif
 };