Add QR code images for transaction assistant, login, and plans

- Added `qrcode-tx-assistant.png` for transaction assistant functionality.
- Added `qrcode-tx-login.png` for user login process.
- Added `qrcode-tx-plans.png` for displaying available plans.

txclient/src/app/landing/dashboard/page.tsx

@@ -41,6 +41,7 @@ import NotificationsNoneOutlinedIcon from "@mui/icons-material/NotificationsNone
 import ChatBubbleOutlineOutlinedIcon from "@mui/icons-material/ChatBubbleOutlineOutlined";
 import AddCircleOutlineOutlinedIcon from "@mui/icons-material/AddCircleOutlineOutlined";
 import AutoAwesomeIcon from "@mui/icons-material/AutoAwesome";
+import HelpOutlineIcon from "@mui/icons-material/HelpOutline";
 import FinancialWidget from "@components/FinancialWidget/FinancialWidget";
 import PlanMetricsWidget from "@components/PlanMetricsWidget/PlanMetricsWidget";
 import PendingRepeatsCard from "@core/app/components/PendingRepeatsCard/PendingRepeatsCard";
@@ -442,6 +443,9 @@ function DashboardContent() {
                                         <div className={classNames(style.actionButton)} style={{backgroundColor: "var(--wine-red)"}} onClick={handleNewAppointmentClick}>
                                             <AddCircleOutlineOutlinedIcon /> Nuevo Turno
                                         </div>
+                                        <div className={classNames(style.actionButton, style.buttonHelp)} onClick={() => goTo("/landing/help")}>
+                                            <HelpOutlineIcon /> Obtener ayuda
+                                        </div>
                                     </div>
                                 </div>