[feat] show public key when asking to change keypair

app/modules/keypair/index.ts

@@ -153,12 +153,15 @@ async function promptKey (conf:KeypairConfDTO, program:any) {
 
   const changeKeypair = !conf.pair || !conf.pair.pub || !conf.pair.sec;
 
-  const answersWantToChange = await inquirer.prompt([{
+  const answersWantToChange = await inquirer.prompt([
+    {
       type: "confirm",
       name: "change",
-    message: "Modify your keypair?",
-    default: changeKeypair
-  }]);
+      message: `This node's current public key is: ${conf.pair.pub} 
+ Modify your keypair?`,
+      default: changeKeypair,
+    },
+  ]);
 
   if (answersWantToChange.change) {
     const obfuscatedSalt = (program.salt || "").replace(/./g, '*');