Runnables: remove version field from the format (#8118)

This changes the format of runnables slightly (the top-level object is
now a sequence, not a map).
The 2nd commit pulls in aliases from .zshrc and co.
Release Notes:

- N/A

crates/terminal_view/src/terminal_panel.rs

@@ -316,7 +316,7 @@ impl TerminalPanel {
             let command = std::mem::take(&mut spawn_task.command);
             let args = std::mem::take(&mut spawn_task.args);
             spawn_task.command = shell;
-            user_args.extend(["-c".to_owned(), command]);
+            user_args.extend(["-i".to_owned(), "-c".to_owned(), command]);
             user_args.extend(args);
             spawn_task.args = user_args;
         }