Add TLS/SSL and mTLS support for Redis

[nmvinicius]

Is your feature request related to a problem? Please describe.
No problem is reported at the moment. The idea is to offer TLS, SSL, and mTLS support for Redis, ensuring the possibility of using a user and password if necessary.

Describe the solution you'd like
Allow the configuration of TLS (and optional certificates) via environment variables, while preserving support for credentials. This covers scenarios with or without certificate use.

Describe alternatives you've considered

1. Use unencrypted connections only.
2. Manually set each parameter without environment variables.

packages/lib/src/redis.ts

import { env } from "@typebot.io/env";
import { Redis, RedisOptions } from "ioredis";
import * as fs from 'fs';

declare const global: { redis: Redis | undefined };
let redis: Redis | undefined;

const redisOptions: RedisOptions = {};

if (env.REDIS_SSL === "true") {
  redisOptions.tls = {};
  
  if (env.REDIS_REJECT_UNAUTHORIZED === "false") {
    redisOptions.tls.rejectUnauthorized = false;
  }

  if (env.REDIS_CA_PATH) {
    redisOptions.tls.ca = [fs.readFileSync(env.REDIS_CA_PATH)];
  }
  if (env.REDIS_CERT_PATH) {
    redisOptions.tls.cert = fs.readFileSync(env.REDIS_CERT_PATH);
  }
  if (env.REDIS_KEY_PATH) {
    redisOptions.tls.key = fs.readFileSync(env.REDIS_KEY_PATH);
  }
}

if (env.NODE_ENV === "production" && !process.versions.bun && env.REDIS_URL) {
  redis = new Redis(env.REDIS_URL, redisOptions);
} else if (env.REDIS_URL) {
  if (!global.redis) {
    global.redis = new Redis(env.REDIS_URL, redisOptions);
  }
  redis = global.redis;
}

export default redis;