To simplify the API before exporting the `PerMessageDeflate` class,
reduce the number of positional parameters in the constructor by moving
`isServer` and `maxPayload` into the options object.

Export the `PerMessageDeflate` class, the parser and serializer for the
`Sec-WebSocket-Extensions` header, and the parser for the
`Sec-WebSocket-Protocol` header.

Documentation is intentionally omitted as these utilities are primarily
intended for niche use cases rather than general consumption.

Refs: #2313

When the `reason` argument for `websocket.close()` is a `TypedArray`
instead of a string or `Buffer`, the function does not correctly
overwrite the dirty buffer allocated via `Buffer.allocUnsafe()`. This
results in the disclosure of uninitialized memory, potentially leaking
sensitive data to the remote peer.

Add stricter validation for the argument type.