add list

src/command/mod.rs

@@ -1,6 +1,7 @@
 pub struct Command(String);
 
 mod say;
+mod list;
 
 impl Command {
     pub fn raw(cmd: &str) -> Self {
@@ -14,4 +15,8 @@ impl Command {
     pub fn say() -> say::SayCommand {
         say::SayCommand::default()
     }
+
+    pub fn list() -> list::ListCommand {
+        list::ListCommand::default()
+    }
 }