split go and c examples

test/go/BUILD

@@ -0,0 +1,16 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
+
+# go build -ldflags "-linkmode external -extldflags -static" hello.go
+go_library(
+    name = "go_lib",
+    srcs = ["hello.go"],
+    cgo = True,
+    importpath = "github.com/motiejus/bazel-zig-cc/test/go",
+    visibility = ["//visibility:private"],
+)
+
+go_binary(
+    name = "go",
+    embed = [":go_lib"],
+    visibility = ["//visibility:public"],
+)

test/go/hello.go

@@ -0,0 +1,9 @@
+package main
+
+// #include <stdio.h>
+// void helloworld() { printf("hello, world\n"); }
+import "C"
+
+func main() {
+	C.helloworld()
+}