Added a dll hello world example program

run following commands to test it:
bazel build --cpu=x64_windows_msvc examples/windows/dll:hello
./bazel-bin/examples/windows/dll/hello

--
Change-Id: I096f6ff66473b1c9980b0aa36ec291f39512dd71
Reviewed-on: https://bazel-review.googlesource.com/#/c/3932
MOS_MIGRATED_REVID=126300284
diff --git a/examples/windows/dll/BUILD b/examples/windows/dll/BUILD
new file mode 100644
index 0000000..2b7e956
--- /dev/null
+++ b/examples/windows/dll/BUILD
@@ -0,0 +1,15 @@
+cc_binary(
+    name = "hellolib.dll",
+    srcs = [
+        "hello-library.cpp",
+    ],
+    linkshared = 1,
+)
+
+cc_binary(
+    name = "hello",
+    srcs = [
+        "hello-world.cpp",
+    ],
+    data = [":hellolib.dll"],
+)