Reorganize the codebase

regression/apps/execve/execve.c

@@ -0,0 +1,15 @@
+#include <stdio.h>
+#include <unistd.h>
+
+int main() {
+    char* argv[] = { "argv1", "argv2", NULL };
+    char* envp[] = { "home=/", "version=1.1", NULL };
+    // The hello will be put at /execve/hello in InitRamfs
+    printf("Execve a new file /execve/hello:\n");
+    // flush the stdout content to ensure the content print to console
+    fflush(stdout);
+    execve("/execve/hello", argv, envp);
+    printf("Should not print\n");
+    fflush(stdout);
+    return 0;
+}