Initialize project structure with configuration files and basic setup

main/CMakeLists.txt

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+idf_component_register(SRCS "main.c"
+                    INCLUDE_DIRS ".")

main/main.c

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+#include <stdio.h>
+
+void app_main(void)
+{
+    // Boilerplate ready.
+    // Place your initialization code here.
+}