feat: Implement OTA status API with partition information, define ESP32 partition layout, add ArrayCount utility, and include agent interaction rules.

Provider/main/utils.hpp

@@ -0,0 +1,8 @@
+#pragma once
+
+#include <types.hpp>
+
+template <typename T, size_t N> constexpr size_t ArrayCount(T (&)[N])
+{
+  return N;
+}