[nativert] port semaphore to c10 util (#153504)

Summary:
nativert RFC: https://github.com/zhxchen17/rfcs/blob/master/RFC-0043-torch-native-runtime.md

To land the runtime into PyTorch core, we will gradually land logical parts of the code into the Github issue and get each piece properly reviewed.

This diff adds a simple semaphore interface into c10 until c++20 where we get counting_semaphore

gonna need a oss build export to take a look at this...

Test Plan: CI

Differential Revision: D73882656

Pull Request resolved: https://github.com/pytorch/pytorch/pull/153504
Approved by: https://github.com/zhxchen17

third_party/BUCK.oss

@@ -75,6 +75,15 @@ cxx_library(
     visibility = ["PUBLIC"],
 )
 
+cxx_library(
+    name = "moodycamel",
+    raw_headers = glob([
+        "concurrentqueue/**/*.h",
+    ]),
+    reexport_all_header_dependencies = True,
+    visibility = ["PUBLIC"],
+)
+
 cxx_library(
     name = "pocketfft_header",
     header_namespace = "",