Merge pull request #7 from chopper985/feat/add-gpt-4-turbo-model

Feat: Add gpt 4 turbo model

Author: lambiengcode

lib/src/models/gpt_model.dart

@@ -1,5 +1,6 @@
 enum GPTModel {
  gpt4("gpt-4", 8192, isChatCompletion: true),
+ gpt4turbo("gpt-4-turbo-2024-04-09", 128000, isChatCompletion: true),
  gpt4v0613("gpt-4-0613", 8192, isChatCompletion: true),
  gpt4p32k("gpt-4-32k", 32768, isChatCompletion: true),
  gpt4p32kv0613("gpt-4-32k-0613", 32768, isChatCompletion: true),