Fix BUCK

Author: kirklandsign

examples/models/llama/runner/targets.bzl

@@ -30,6 +30,7 @@ def define_common_targets():
             # qnn_executorch_backend can be added below //executorch/backends/qualcomm:qnn_executorch_backend
             exported_deps = [
                 "//executorch/backends/xnnpack:xnnpack_backend",
+                "//executorch/extension/llm/runner:irunner",
                 "//executorch/extension/llm/runner:stats",
                 "//executorch/extension/llm/runner:text_decoder_runner" + aten_suffix,
                 "//executorch/extension/llm/runner:text_prefiller" + aten_suffix,

extension/llm/runner/targets.bzl

@@ -1,6 +1,16 @@
 load("@fbsource//xplat/executorch/build:runtime_wrapper.bzl", "runtime")
 
 def define_common_targets():
+    runtime.cxx_library(
+        name = "irunner",
+        exported_headers = [
+            "irunner.h",
+        ],
+        visibility = [
+            "@EXECUTORCH_CLIENTS",
+        ],
+    )
+
     runtime.cxx_library(
         name = "stats",
         exported_headers = [