cleanup some TODOs

Author: michael-ameri

gemini-api/src/main/java/swiss/ameri/gemini/api/Content.java

@@ -72,7 +72,6 @@ record MediaContent(
             String role,
             MediaData media
     ) implements Content {
-        // todo test
     }
 
     /**
@@ -85,8 +84,6 @@ record TextAndMediaContent(
             String text,
             List<MediaData> media
     ) implements Content {
-        // todo test
-
         public static TextAndMediaContentBuilder builder() {
             return new TextAndMediaContentBuilder();
         }

gemini-api/src/main/java/swiss/ameri/gemini/api/GenAi.java

@@ -74,7 +74,6 @@ public List<Model> listModels() {
      * @see #listModels()
      */
     public Model getModel(ModelVariant model) {
-        // todo return GenerativeModelBuilder. or add "toGenerativeModelBuilder" method. or add separate method...
         return getModel(model.variant());
     }
 
@@ -166,7 +165,6 @@ public CompletableFuture<GeneratedContent> generateContent(GenerativeModel model
     }
 
     private static GenerateContentRequest convert(GenerativeModel model) {
-        // todo add safetySettings, generationConfig
         List<GenerationContent> generationContents = model.contents().stream()
                 .map(content -> {
                     // todo change to "switch" over sealed type with jdk 21