add SerializeExperimentFlags to Project

src/app/core/project.h

@@ -32,7 +32,7 @@ constexpr absl::string_view kEndOfProjectFile = "EndOfProjectFile";
  * backups.
  */
 
-struct Project {
+struct Project : public core::ExperimentFlags {
   /**
    * @brief Creates a new project.
    *
@@ -117,6 +117,12 @@ struct Project {
     return absl::OkStatus();
   }
 
+  absl::Status SerializeExperimentFlags() {
+    auto flags = mutable_flags();
+    // TODO: Serialize flags
+    return absl::OkStatus();
+  }
+
   bool project_opened_ = false;
   std::string name;
   std::string filepath;