Update GoogleGemini examples to use new model ID gemini_2_5_pro_exp_03_25 and add it to OpenAIChatCompletionExtra for "out-of-box" json schema support

Author: peterbanda

openai-core/src/main/scala/io/cequence/openaiscala/service/OpenAIChatCompletionExtra.scala

@@ -188,6 +188,7 @@ object OpenAIChatCompletionExtra {
     ModelId.o1_2024_12_17,
     ModelId.o3_mini,
     ModelId.o3_mini_2025_01_31,
+    NonOpenAIModelId.gemini_2_5_pro_exp_03_25,
     NonOpenAIModelId.gemini_2_0_flash,
     NonOpenAIModelId.gemini_2_0_flash_001,
     NonOpenAIModelId.gemini_2_0_pro_exp_02_05,

openai-examples/src/main/scala/io/cequence/openaiscala/examples/googlegemini/GoogleGeminiCreateChatCompletion.scala

@@ -10,6 +10,7 @@ import scala.concurrent.Future
 /**
  * Requires `GOOGLE_API_KEY` environment variable to be set.
  */
+  // TODO: remove this... we have a better provider for Gemini. See [[GoogleGeminiCreateChatCompletionJSONWithOpenAIAdapter]]
 object GoogleGeminiCreateChatCompletion extends ExampleBase[OpenAIChatCompletionService] {
 
   override val service: OpenAIChatCompletionService = ChatCompletionProvider.gemini
@@ -18,7 +19,7 @@ object GoogleGeminiCreateChatCompletion extends ExampleBase[OpenAIChatCompletion
     UserMessage("Explain AI to a 5-year-old.")
   )
 
-  private val modelId = NonOpenAIModelId.gemini_1_5_flash_001
+  private val modelId = NonOpenAIModelId.gemini_2_0_flash
 
   override protected def run: Future[_] =
     service

openai-examples/src/main/scala/io/cequence/openaiscala/examples/googlegemini/GoogleGeminiCreateChatCompletionJSONWithOpenAIAdapter.scala

@@ -56,7 +56,7 @@ object GoogleGeminiCreateChatCompletionJSONWithOpenAIAdapter
     required = Seq("countries")
   )
 
-  private val modelId = NonOpenAIModelId.gemini_2_0_flash
+  private val modelId = NonOpenAIModelId.gemini_2_5_pro_exp_03_25
 
   override protected def run: Future[_] =
     service