Add termname

src/builtins/termname.c

@@ -0,0 +1,21 @@
+/*
+** EPITECH PROJECT, 2025
+** __
+** File description:
+** _
+*/
+
+#include <stdio.h>
+
+#include "exec.h"
+
+
+int builtins_termname(ef_t *ef, char **)
+{
+    char *termname = get_env_value(ef->env, "TERM");
+
+    if (termname == nullptr)
+        return RETURN_FAILURE;
+    printf("%s\n", termname);
+    return RETURN_SUCCESS;
+}