Add initial project structure and files

include/cli.h

@@ -0,0 +1,33 @@
+#ifndef CLI_H
+#define CLI_H
+
+/*
+ * Result structure containing command status and message
+ */
+typedef struct {
+  int success;   // 0 for failure, 1 for success
+  char *message; // Result or error message
+} cli_result_t;
+
+/*
+ * cli_print_help - Prints the cli's usage text to stdout.
+ */
+void cli_print_help(void);
+
+/*
+ * cli_execute - Parse arguments and execute the command
+ * @argc: Argument count
+ * @argv: Argument array
+ *
+ * Returns: cli_result_t with status and message.
+ * Caller must free message with string_free().
+ */
+cli_result_t cli_execute(int argc, char *argv[]);
+
+/*
+ * cli_print_result - Print a result to stdout
+ * @result: Result structure from cli_execute
+ */
+void cli_print_result(const cli_result_t *result);
+
+#endif