programs: add simple false program

programs/CMakeLists.txt

@@ -1,5 +1,6 @@
 # List of programs.
 set(PROGRAM_LIST
+    false.c
     nice.c
     ls.c
     mkdir.c

programs/false.c

@@ -0,0 +1,11 @@
+/// @file false.c
+/// @brief
+/// @copyright (c) 2024 This file is distributed under the MIT License.
+/// See LICENSE.md for details.
+
+#include <sys/unistd.h>
+
+int main(int argc, char **argv)
+{
+    exit(1);
+}