feat: tmux session attach mode (#901)

* feat: tmux session attach mode

* feat: example config update

* feat: move the comment down to be relevant

* feat: fix tmux not attaching from non-tmux env when using create_and_switch_client

* feat: make matching on tmux modes as described in suggestions

* feat: make tmux_session_attach_mode private

* feat: remove tmux mode cli option

* feat: wrap default value in quotation marks for tmux session mode

* feat: renames for tmux session management options

* feat: try to make tmux session mode description better

src/main.rs

@@ -118,7 +118,7 @@ fn run() -> Result<()> {
     if config.run_in_tmux() && env::var("TOPGRADE_INSIDE_TMUX").is_err() {
         #[cfg(unix)]
         {
-            tmux::run_in_tmux(config.tmux_arguments()?)?;
+            tmux::run_in_tmux(config.tmux_config()?)?;
             return Ok(());
         }
     }