Add test application for FreeRTOS simulation

Co-Authored-By: daniele@wolfssl.com <daniele@wolfssl.com>

fullstack/freertos-wolfip-wolfssl-https/src/main.c

@@ -0,0 +1,25 @@
+#include <stdio.h>
+#include "FreeRTOS.h"
+#include "task.h"
+
+static void testTask(void* pvParameters) {
+    const TickType_t xDelay = 1000 / portTICK_PERIOD_MS;
+    
+    for(;;) {
+        printf("FreeRTOS Test Task Running\n");
+        vTaskDelay(xDelay);
+    }
+}
+
+int main(void) {
+    printf("Starting FreeRTOS simulation...\n");
+    
+    /* Create the test task */
+    xTaskCreate(testTask, "TestTask", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY + 1, NULL);
+    
+    /* Start the scheduler */
+    vTaskStartScheduler();
+    
+    /* Should never reach here */
+    return 0;
+}