Refactor MistralAiChatOptions builder methods

- Refactor the builder methods to remove `with` as the prefix.
- Introduce new methods with updated naming conventions.
- Deprecate the existing `with*` methods to maintain backward compatibility.
- Update MistralAiChatOptions builder documentation

spring-ai-docs/src/main/antora/modules/ROOT/pages/api/chat/functions/mistralai-chat-functions.adoc

@@ -153,7 +153,7 @@ MistralAiChatModel chatModel = ...
 UserMessage userMessage = new UserMessage("What's the weather like in Paris?");
 
 ChatResponse response = this.chatModel.call(new Prompt(this.userMessage,
-		MistralAiChatOptions.builder().withFunction("CurrentWeather").build())); // Enable the function
+		MistralAiChatOptions.builder().function("CurrentWeather").build())); // Enable the function
 
 logger.info("Response: {}", response);
 ----
@@ -173,7 +173,7 @@ MistralAiChatModel chatModel = ...
 UserMessage userMessage = new UserMessage("What's the weather like in Paris?");
 
 var promptOptions = MistralAiChatOptions.builder()
-	.withFunctionCallbacks(List.of(FunctionCallback.builder()
+	.functionCallbacks(List.of(FunctionCallback.builder()
 		.function("CurrentWeather", new MockWeatherService()) // (1) function name and instance
         .description("Get the weather in location") // (2) function description
 		.inputType(MockWeatherService.Request.class) // (3) function signature

spring-ai-docs/src/main/antora/modules/ROOT/pages/api/chat/mistralai-chat.adoc

@@ -126,8 +126,8 @@ ChatResponse response = chatModel.call(
     new Prompt(
         "Generate the names of 5 famous pirates.",
         MistralAiChatOptions.builder()
-            .withModel(MistralAiApi.ChatModel.LARGE.getValue())
-            .withTemperature(0.5)
+            .model(MistralAiApi.ChatModel.LARGE.getValue())
+            .temperature(0.5)
         .build()
     ));
 ----
@@ -222,9 +222,9 @@ Next, create a `MistralAiChatModel` and use it for text generations:
 var mistralAiApi = new MistralAiApi(System.getenv("MISTRAL_AI_API_KEY"));
 
 var chatModel = new MistralAiChatModel(this.mistralAiApi, MistralAiChatOptions.builder()
-                .withModel(MistralAiApi.ChatModel.LARGE.getValue())
-                .withTemperature(0.4)
-                .withMaxTokens(200)
+                .model(MistralAiApi.ChatModel.LARGE.getValue())
+                .temperature(0.4)
+                .maxTokens(200)
                 .build());
 
 ChatResponse response = this.chatModel.call(