ipython-dependency interferes with server-side setup

[th3hamm0r]

We currently have issues with the required dependency of ipython with our server environment (django). Is it possible to make it an optional dependency?

The only usage of ipython seems to be here: https://github.com/elevenlabs/elevenlabs-python/blob/eca8ec7670bbd6dc1f4db07e3eb964c14d265466/src/elevenlabs/play.py#L21 Since server environments usually don't have speakers and won't play anything, this seems to be an unnecessary dependency there.

[dsinghvi]

@th3hamm0r definitely -- we'll follow up when this change is fixed!