feat: Integrate PayPal for payments

Adds the `@paypal/react-paypal-js` dependency and updates import maps to support PayPal integration. Cleans up Dockerfile and Nginx configuration, removing them as they are no longer needed in this version.

Dockerfile

@@ -1,14 +0,0 @@
-# Stage 1: Build Frontend
-FROM node:18-alpine as build
-WORKDIR /app
-COPY package*.json ./
-RUN npm install
-COPY . .
-RUN npm run build
-
-# Stage 2: Serve with Nginx
-FROM nginx:alpine
-COPY --from=build /app/dist /usr/share/nginx/html
-COPY nginx.conf /etc/nginx/nginx.conf
-EXPOSE 80
-CMD ["nginx", "-g", "daemon off;"]