Focus change to new VM when added

the focus  change to that new VM on the Basic tab when the new VM  added

Tracked-On: #7914
Signed-off-by: Chuang-Ke <chuangx.ke@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>

misc/config_tools/configurator/packages/configurator/src/pages/Config.vue

@@ -245,6 +245,7 @@ export default {
       }
       maxVMID++;
       this.scenario.vm.push(configurator.newVM(maxVMID, load_order))
+      this.switchTab(maxVMID)
     },
     deleteVM() {
       let currentVMIndex = -1;