feat: Introduce reasoning capabilities in chat and text completion

- Added AbstractCompletionRequest and AbstractCompletionResponse classes to standardize request and response structures.
- Implemented StreamOptions for streaming responses in chat completions.
- Enhanced ChatCompletionClient and TextCompletionClient to support reasoning content in responses.
- Updated ModelProfile to include reasoning effort and summary details.
- Created GptOssPromptStrategy to handle specific prompt formatting and reasoning extraction.
- Modified existing tests to validate reasoning content in completions.
- Updated configuration properties for reasoning settings in local properties files.

src/main/java/de/extio/lmlib/client/ClientService.java

@@ -69,7 +69,7 @@ public class ClientService {
 		}
 
 		@Override
-		public Completion streamConversation(final ModelCategory modelCategory, final Conversation conversation_, final Consumer<String> chunkConsumer) {
+		public Completion streamConversation(final ModelCategory modelCategory, final Conversation conversation_, final Consumer<Chunk> chunkConsumer) {
 			Conversation conversation = conversation_;
 			for (final var interceptor : this.completionInterceptors) {
 				conversation = interceptor.before(modelCategory, conversation);