feat: Implement ticket commenting functionality

Adds the ability for users to comment on tickets, view comments, and distinguish between user and admin responses. Also introduces a new 'SUSPENDED' status for tickets and refactors database schema and API endpoints to support comments.

server/Dockerfile

@@ -1,13 +0,0 @@
-FROM node:18-alpine
-WORKDIR /app
-
-# Set production environment
-ENV NODE_ENV=production
-
-COPY package*.json ./
-RUN npm install --production
-
-COPY . .
-
-EXPOSE 3001
-CMD ["node", "server.js"]