Model gpt-4o-realtime-preview-2024-10-01 should not be hardcoded

[michitomo]

Issue:

• It won't allow using other models than the hardcoded model gpt-4o-realtime-preview-2024-10-01
• A new model gpt-4o-realtime-preview-2024-12-17 has been released with lower price.
• Alias gpt-4o-realtime-preview is also available

Expected:

• Library consumers should be able to specify models they choose
• The library should point model alias instead of a specific dated model

[Van0SS]

+1 this is very strange to discover and appreciate the PR!

[Kotoryu]

+1 totally agree, we should have possibility to change the model.

[yanaocean]

+1 agree!

[hinke]

+1 !!

[BraveTiger0408]

❤A new model gpt-4o-realtime-preview-2024-12-17 has been released with lower price.❤
Thank you.

[jjmlovesgit]

please see: #92
#92 This PR introduces the ability to select a custom OpenAI realtime model in the RealtimeClient. Users can now specify the desired model for more flexibility and tailored API usage.