wip: add an example header

Author: chmjkb

packages/react-native-executorch/common/rnexecutorch/models/llm/Runner.cpp

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <executorch/runner/runner.h>
+
+namespace rnexecutorch {
+class LLM {
+private:
+  std::unique_ptr<example::Runner> runner;
+  size_t externalMemoryPressure{
+      0}; // TODO: the naming is off, this is just a placeholder
+
+public:
+  LLM(const std::string &modelSource, const std::string &tokenizerSource);
+  void generate(std::string input, void *callback);
+  size_t getExternalMemoryPressure(); // TODO: the naming is off, this is just a
+                                      // placeholder
+  void unload();
+};
+} // namespace rnexecutorch