feat(*): Add server classes

server/classes/Room.ts

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+import { WebSocket } from 'ws';
+import { User } from './User';
+
+export class Room {
+	id: string;
+	users: Map<WebSocket, User>;
+
+	constructor(id: string) {
+		this.id = id;
+		this.users = new Map();
+	}
+
+	addUser(ws: WebSocket, user: User) {
+		this.users.set(ws, user);
+	}
+
+	removeUser(ws: WebSocket) {
+		this.users.delete(ws);
+	}
+
+	getUsers() {
+		return Array.from(this.users.values());
+	}
+
+	getUserByWebSocket(ws: WebSocket) {
+		return this.users.get(ws);
+	}
+
+	broadcast(message: any) {
+		this.users.forEach((user, client) => {
+			if (client.readyState === WebSocket.OPEN) {
+				client.send(JSON.stringify(message));
+			}
+		});
+	}
+
+	getAllEstimates() {
+		const estimates = new Map<string, number>();
+		this.users.forEach((user) => {
+			if (user.estimate !== null) {
+				estimates.set(user.name, user.estimate);
+			}
+		});
+		return estimates;
+	}
+
+	clearEstimates() {
+		this.users.forEach((user) => {
+			user.estimate = null;
+		});
+	}
+}

server/classes/User.ts

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+export class User {
+	userId: string;
+	name: string;
+	estimate: number | null;
+
+	constructor(userId: string, name: string) {
+		this.userId = userId;
+		this.name = name;
+		this.estimate = null;
+	}
+}

server/classes/messages/ChangeEstimateMessage.ts

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+export class ChangeEstimateMessage {
+	type: string;
+	roomId: string;
+	userId: string;
+	estimate: number;
+
+	constructor(roomId: string, userId: string, estimate: number) {
+		this.type = 'change-estimate';
+		this.roomId = roomId;
+		this.userId = userId;
+		this.estimate = estimate;
+	}
+}

server/classes/messages/JoinRoomMessage.ts

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+export class JoinRoomMessage {
+    type: string;
+    roomId: string;
+    userId: string;
+    name: string;
+  
+    constructor(roomId: string, userId: string, name: string) {
+      this.type = 'join-room';
+      this.roomId = roomId;
+      this.userId = userId;
+      this.name = name;
+    }
+  }
+  

server/classes/messages/SelectEstimateMessage.ts

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+export class SelectEstimateMessage {
+	type: string;
+	roomId: string;
+	userId: string;
+	estimate: number;
+
+	constructor(roomId: string, userId: string, estimate: number) {
+		this.type = 'select-estimate';
+		this.roomId = roomId;
+		this.userId = userId;
+		this.estimate = estimate;
+	}
+}