Add async chat test and comment out related code

Add new enum values and refactor TTSRequest validation

Update tests and core functionality for async chat feature

Add new records, enums and update method signatures

Update OllamaService and Gemini tests and model constants

Add cached content support to Gemini API

Refactor code for readability and remove unused test

Update ClaudeService and corresponding tests

Refactor tests and improve WavFileSplitter code

Update StabilityAiService to accept model type

Update image source in OllamaServiceTest

Implement asynchronous chat feature in OllamaService

Add ultra quality image generation in StabilityAi service

Add new test, logger, and refactor method in OllamaService

Refactor MistralServiceTest and add Mistral base URL to properties