refactor: Migrate screen sharing media handling from direct WebRTC to Mediasoup.

Dockerfile

@@ -1,7 +1,9 @@
-FROM node:20-alpine
+FROM node:20
 WORKDIR /app
 COPY package*.json ./
-RUN npm install --production
+RUN npm install
 COPY . .
+RUN npx esbuild public/mediasoup-entry.js --bundle --outfile=public/mediasoup-client.js --format=iife --global-name=mediasoupClient --platform=browser
 EXPOSE 3000
+EXPOSE 40000-49999/udp
 CMD ["npm", "start"]