port //c10/macros to common build structure (#70852)

Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/70852

This is the first change that uses a common build file, build.bzl, to
hold most of the build logic.
ghstack-source-id: 147170895

Test Plan: Relying on internal and external CI.

Reviewed By: malfet

Differential Revision: D33299331

fbshipit-source-id: a66afffba6deec76b758dfb39bdf61d747b5bd99
(cherry picked from commit d9163c56f55cfc97c20f5a6d505474d5b8839201)

tools/bazel.bzl

@@ -0,0 +1,11 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+load("//c10/macros:cmake_configure_file.bzl", "cmake_configure_file")
+
+# Rules implementation for the Bazel build system. Since the common
+# build structure aims to replicate Bazel as much as possible, most of
+# the rules simply forward to the Bazel definitions.
+rules = struct(
+    cc_library = cc_library,
+    cmake_configure_file = cmake_configure_file,
+    select = select,
+)