starting with ESP-IDF

- initial ESP-IDF project
- starting custom component (Timber)

Signed-off-by: Peter Siegmund <peter@rdkr.com>

ePaper-ESP-IDF/components/timber/include/tree.h

@@ -0,0 +1,6 @@
+#pragma once
+
+class Tree {
+ public:
+  virtual ~Tree();
+};