console: don't exit on ctrl-c, only on ctrl-d #21660 (#1531)

* add interrupt counter

* remove interrupt counter, allow ctrl-C to clear ONLY, ctrl-D will terminate console, stop node

* format

* add instructions to exit

* fix tests

Co-authored-by: rene <41963722+renaynay@users.noreply.github.com>

cmd/XDC/consolecmd_test.go

@@ -66,6 +66,7 @@ at block: 0 ({{niltime}})
  datadir: {{.Datadir}}
  modules: {{apis}}
 
+To exit, press ctrl-d
 > {{.InputLine "exit"}}
 `)
 	XDC.ExpectExit()
@@ -155,6 +156,7 @@ at block: 0 ({{niltime}}){{if ipc}}
  datadir: {{datadir}}{{end}}
  modules: {{apis}}
 
+To exit, press ctrl-d
 > {{.InputLine "exit" }}
 `)
 	attach.ExpectExit()

console/console.go

@@ -320,6 +320,7 @@ func (c *Console) Welcome() {
 		sort.Strings(modules)
 		message += " modules: " + strings.Join(modules, " ") + "\n"
 	}
+	message += "\nTo exit, press ctrl-d"
 	fmt.Fprintln(c.printer, message)
 }