add macos support

+ buildifier

test/BUILD

@@ -11,6 +11,19 @@ go_library(
 go_binary(
     name = "gognu",
     embed = [":go_lib"],
+    target_compatible_with = ["@platforms//os:linux"],
+    visibility = ["//visibility:public"],
+)
+
+go_binary(
+    name = "gomacos",
+    embed = [":go_lib"],
+    gc_linkopts = [
+        "-s",
+        "-w",
+        "-buildmode=pie",
+    ],
+    target_compatible_with = ["@platforms//os:macos"],
     visibility = ["//visibility:public"],
 )