Enhance ValidateBreweryJson to include reasoning output and update GenerateBrewery to use user_prompt

Add gemma parser

pipeline/includes/data_generation/prompt_formatting/gemma4_jinja_prompt_formatter.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <string>
+#include <string_view>
+
+#include "data_generation/prompt_formatting/prompt_formatter.h"
+
+class Gemma4JinjaPromptFormatter final : public IPromptFormatter {
+ public:
+  Gemma4JinjaPromptFormatter() = default;
+  ~Gemma4JinjaPromptFormatter() override = default;
+
+  [[nodiscard]] std::string Format(std::string_view system_prompt,
+                                   std::string_view user_prompt) const override;
+};

pipeline/includes/data_generation/prompt_formatting/prompt_formatter.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <string>
+#include <string_view>
+
+class IPromptFormatter {
+ public:
+  IPromptFormatter() = default;
+  IPromptFormatter(const IPromptFormatter&) = delete;
+  IPromptFormatter& operator=(const IPromptFormatter&) = delete;
+  IPromptFormatter(IPromptFormatter&&) = delete;
+  IPromptFormatter& operator=(IPromptFormatter&&) = delete;
+  virtual ~IPromptFormatter() = default;
+
+  [[nodiscard]] virtual std::string Format(
+      std::string_view system_prompt,
+      std::string_view user_prompt) const = 0;
+};