Add Transmit history persistence for respecting traffic intervals between reboots (#9748)

* Add transmit history for throttling that persists between reboots

* Fix RAK long press detection to prevent phantom shutdowns from floating pins

* Update test/test_transmit_history/test_main.cpp

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Test fixes and placeholder for content handler tests

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

test/test_http_content_handler/test_main.cpp

@@ -0,0 +1,19 @@
+#include "TestUtil.h"
+#include <unity.h>
+
+static void test_placeholder()
+{
+    TEST_ASSERT_TRUE(true);
+}
+
+extern "C" {
+void setup()
+{
+    initializeTestEnvironment();
+    UNITY_BEGIN();
+    RUN_TEST(test_placeholder);
+    exit(UNITY_END());
+}
+
+void loop() {}
+}