Extend the load/unload/reload subcommands for launchctl.

launchctl-reload.sh

function _launchctl_unload() {
  local plist_file=$1

  test -f $plist_file || { echo "Invalid launchctl file for unloading!"; return; }
  local label_name=$(defaults read $(readlink -f $plist_file) Label)

  command launchctl stop $label_name || { echo "Failed to stop the service "$label_name ; return; }
  command launchctl unload -w $plist_file || { echo "Failed to unload the file "$plist_file ; return; }
}

function _launchctl_load() {
  local plist_file=$1

  test -f $plist_file || { echo "Invalid launchctl file for loading!"; return; }
  local label_name=$(defaults read $(readlink -f $plist_file) Label)

  command launchctl load -w $plist_file || { echo "Failed to load the file "$plist_file ; return; }
  command launchctl start $label_name || { echo "Failed to start the service "$label_name ; return; }
}

function _launchctl_reload() {
  _launchctl_unload "$@"
  _launchctl_load "$@"
}

launchctl() {
    case "$1" in
        "load")
            shift
            _launchctl_load "$@"
            ;;
        "unload")
            shift
            _launchctl_unload "$@"
            ;;
        "reload")
            shift
            _launchctl_reload "$@"
            ;;
        *)
            command launchctl "$@"
            ;;
    esac
}

Copy the script code to the prefer shell profile.