feat: add Anthropic Claude Messages API client

Adds AnthropicClient with tool use, SSE streaming, and extended
thinking behind an optional AnthropicDialect bean, plus ANTHROPIC
model provider, request-shaping unit tests, and integration tests
against an Anthropic-compatible server.

src/main/java/de/extio/lmlib/profile/ModelProfile.java

@@ -42,6 +42,6 @@ public record ModelProfile(
 	}
 	
 	public static enum ModelProvider {
-		OAI_TEXT_COMPLETION, OAI_CHAT_COMPLETION, OAI_RESPONSES, OPENROUTER, OLLAMA;
+		OAI_TEXT_COMPLETION, OAI_CHAT_COMPLETION, OAI_RESPONSES, OPENROUTER, OLLAMA, ANTHROPIC;
 	}
 }