Move version.h to torch/headeronly (#164381)

Differential Revision: [D83685392](https://our.internmc.facebook.com/intern/diff/D83685392)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/164381
Approved by: https://github.com/janeyx99

tools/bazel.bzl

@@ -16,6 +16,7 @@ def _is_cpu_static_dispatch_build():
 # build structure aims to replicate Bazel as much as possible, most of
 # the rules simply forward to the Bazel definitions.
 rules = struct(
+    alias = native.alias,
     cc_binary = cc_binary,
     cc_library = cc_library,
     cc_test = cc_test,

tools/setup_helpers/BUILD.bazel

@@ -11,5 +11,8 @@ py_binary(
 py_binary(
     name = "gen_version_header",
     srcs = ["gen_version_header.py"],
-    visibility = ["//:__pkg__"],
+    visibility = [
+        "//:__pkg__",
+        "//torch/headeronly:__pkg__",
+    ],
 )

tools/setup_helpers/build.bzl

@@ -13,5 +13,8 @@ def define_targets(rules):
     rules.py_binary(
         name = "gen_version_header",
         srcs = ["gen_version_header.py"],
-        visibility = ["//:__pkg__"],
+        visibility = [
+            "//:__pkg__",
+            "//torch/headeronly:__pkg__",
+        ],
     )