feat: add shell completions

src/cli.rs

@@ -1,5 +1,5 @@
 use crate::daemon::{Answer, AnswerErr, Command as OtherCommand};
-use crate::run_path;
+use crate::helper::run_path;
 use anyhow::{Context, Result};
 use clap::{Parser, Subcommand};
 use std::net::Shutdown;
@@ -56,6 +56,12 @@ pub enum Command {
     #[command(subcommand)]
     #[clap(visible_alias = "p")]
     Pomodoro(PomodoroCommand),
+
+    /// Shell completions
+    Completions {
+        #[arg(value_enum)]
+        shell: clap_complete_command::Shell,
+    }
 }
 
 #[derive(Debug, Subcommand)]