Better message `switch` command when current branch not found in any stack

```
❯ gostacking switch 
Error: Branch main not found
Usage:
  gostacking switch [stack or number] [flags]

Flags:
  -h, --help   help for switch

Global Flags:
  -v, --verbose   Display all Git commands run under the hood
```

Maybe something like

```
❯ gostacking switch 
Error: Current branch main not found in any stack, check list command
```