refonte de la gestion des cmd dans parsing

srcs/parsing/cmd_expansion.c

@@ -0,0 +1,28 @@
+
+#include "minishell.h"
+
+void	cmd_expansion(t_cmd **cmd_arr, char **envp)
+{
+	char	**str;
+	char	*var;
+	int		i;
+	int		j;
+
+	(void)envp;
+	i = 0;
+	while (cmd_arr[i])
+	{
+		j = 0;
+		str = cmd_arr[i]->argv;
+		while (str[j])
+		{
+			var = ft_strchr(str[j], '$');
+			if (var != NULL)
+			{
+				printf("%s\n", var);
+			}
+			j++;
+		}
+		i++;
+	}
+}