Add tensorflow/profiler as a dependency for tensorflow

As part of an ongoing effort to decouple our ml profiler code from tensorflow, this PR lays the foundation for moving code into tensorflow/profiler.

This PR touches code within tensorflow/tensorflow, tensorflow/profiler, and openxla/xla. Here is an outline of the changes for each repo.
tensorflow/tensorflow:
* Grant Visibility to //@org_xprof/xprof/(pywrap)

openxla/xla:
* Functionally a no-op in OSS. Grants visibility to xprof, however all uses are wrapped in `internal_visibility`.

tensorflow/profiler:
* Create xprof subdirectory

PiperOrigin-RevId: 728773582

WORKSPACE

@@ -184,6 +184,8 @@ http_archive(
     patches = [
         "//third_party:tensorflow.patch",
         "//third_party:tensorflow_add_grpc_cares_darwin_arm64_support.patch",
+        "//third_party:tensorflow_public_visibility.patch",  # TODO(matthurd): Remove after tf migration.
+        "//third_party:tensorflow_public_visibility_2.patch",  # TODO(matthurd): Remove after tf migration.
     ],
     strip_prefix = "tensorflow-master",
     urls = [

third_party/tensorflow_public_visibility.patch

@@ -0,0 +1,11 @@
+--- a/tensorflow/core/profiler/convert/BUILD
++++ b/tensorflow/core/profiler/convert/BUILD
+@@ -4,7 +4,7 @@
+
+ package(
+     # copybara:uncomment default_applicable_licenses = ["//tensorflow:license"],
+-    default_visibility = ["//tensorflow/core/profiler:internal"],
++    default_visibility = ["//visibility:public"],
+     licenses = ["notice"],
+ )
+

third_party/tensorflow_public_visibility_2.patch

@@ -0,0 +1,11 @@
+--- a/tensorflow/core/profiler/protobuf/BUILD
++++ b/tensorflow/core/profiler/protobuf/BUILD
+@@ -33,7 +33,7 @@
+     protodeps = [
+         "@local_tsl//tsl/profiler/protobuf:xplane_proto",
+     ],
+-    visibility = [":friends"],
++    visibility = ["//visibility:public"],
+     exports = [
+         "@local_tsl//tsl/profiler/protobuf:xplane_proto",
+     ],