Breaking change.

• EmbeddingCreateRequest.Input was a string list type now it is a string type.
  I have introduced InputAsList property instead of Input. You may need to update your code according the change.
  Both Input(string) and InputAsList(string list) avaliable for use

Added string and string List support for some of the propertis.

• CompletionCreateRequest --> Prompt & PromptAsList / Stop & StopAsList
• CreateModerationRequest --> Input & InputAsList
• EmbeddingCreateRequest --> Input & InputAsList