started Neopixel structs

hello_world/usb/wrappers/CriticalSection.h

@@ -0,0 +1,20 @@
+#ifndef H_10337EC23C94444EB1628220BA87E2D7
+#define H_10337EC23C94444EB1628220BA87E2D7
+
+#include "pico/sync.h"
+
+class CriticalSection
+{
+    private:
+        critical_section_t _critical;
+    
+    public:
+        CriticalSection();
+        void lock();
+        void unlock();
+        ~CriticalSection();
+};
+
+
+
+#endif //H_10337EC23C94444EB1628220BA87E2D7