Support Uint8Array values for zero-copy transfer to worker_threads

Motivation

Currently, Redis values are returned as Buffer, which requires manual conversion or copying when sending data to worker_threads.
To enable zero-copy transfer, it would be great to support Uint8Array as a return type.
Internally, the implementation may use new TextEncoder().encode(redisRes) or similar logic when encoding strings to Uint8Array.

Basic Code Example

const redis = await createClient({ url: 'redis://localhost:7777' })
        .on("error", (err) => console.log("Redis Client Error", err))
        .connect();

    const rawData = await fs.readFile('./package.json');

    await redis.set('__foo1', rawData);

    const res = await redis.withTypeMapping({
        [RESP_TYPES.BLOB_STRING]: Uint8Array,
    }).get('__foo1');

    worker.postMessage(res, [res.buffer]);

Start by tracing withTypeMapping and RESP_TYPES.BLOB_STRING handling in the node-redis codebase, then inspect how values are returned from get(). Use the worker_threads postMessage example as the behavioral check; done means a mapped Uint8Array can be transferred without manual conversion or copying.