Resolve "Prettify startup errors reporting"

Summary

Added error handling(panic) in case the listen port is busy.

On top of main loop where tarantool is executed custom panic::hook has been added to catch all thrown panics in the internal codebase

---

• Close #216 (closed)
• Cherry-pick to: none
• Docs follow-up: not necessary

Closes #216 (closed)

src/cli/run.rs

@@ -123,6 +123,11 @@ pub fn main(args: args::Run) -> ! {
                     // because it's stored in the global variable which we can
                     // access from anywhere. But we still pass it explicitly just
                     // to make sure it's initialized at this early point.
+                    std::panic::set_hook(Box::new(|info| {
+                        println!("Custom panic hook: {}", info);
+                        std::process::exit(1);
+                    }));
+
                     entrypoint.exec(config, to_parent)
                 })
             }