chore: Migrate Go examples to bzlmod (#6637)

examples/go/with_go_source/MODULE.bazel

@@ -0,0 +1,10 @@
+bazel_dep(
+    name = "rules_go",
+    version = "0.49.0",
+    repo_name = "io_bazel_rules_go",
+)
+bazel_dep(
+    name = "gazelle",
+    version = "0.38.0",
+    repo_name = "bazel_gazelle",
+)

examples/go/with_go_source/with_go_source.bazelproject

@@ -6,7 +6,4 @@ derive_targets_from_directories: true
 additional_languages:
   go
 
-build_flags:
-  --enable_bzlmod=false
-
 gazelle_target: //:gazelle

examples/go/with_proto/MODULE.bazel

@@ -1,6 +1,33 @@
-###############################################################################
-# Bazel now uses Bzlmod by default to manage external dependencies.
-# Please consider migrating your external dependencies from WORKSPACE to MODULE.bazel.
-#
-# For more details, please check https://github.com/bazelbuild/bazel/issues/18958
-###############################################################################
+bazel_dep(name = "rules_proto", version = "6.0.2")
+bazel_dep(
+    name = "rules_go",
+    version = "0.49.0",
+    repo_name = "io_bazel_rules_go",
+)
+bazel_dep(
+    name = "gazelle",
+    version = "0.38.0",
+    repo_name = "bazel_gazelle",
+)
+bazel_dep(
+    name = "protobuf",
+    version = "27.3",
+    repo_name = "com_google_protobuf",
+)
+
+go_deps = use_extension("@bazel_gazelle//:extensions.bzl", "go_deps")
+go_deps.module(
+    path = "google.golang.org/grpc",
+    sum = "h1:bs/cUb4lp1G5iImFFd3u5ixQzweKizoZJAwBNLR42lc=",
+    version = "v1.65.0",
+)
+go_deps.module(
+    path = "google.golang.org/genproto/googleapis/rpc",
+    sum = "h1:vtJDfLUGToYyn1hvIGIC+GoVCMD0wuoUmfXxcKzxxNE=",
+    version = "v0.0.0-20240808180809-ff45bb20cc4e",
+)
+use_repo(
+    go_deps,
+    "org_golang_google_genproto_googleapis_rpc",
+    "org_golang_google_grpc",
+)