wip: go repositories

bin/mod-tidy

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+set -xeuo pipefail
+
+cd "$(git rev-parse --show-toplevel)"
+bazel build @go_sdk//:go_sdk
+bazel-bazel-zig-cc/external/go_sdk/bin/go mod tidy
+exec bazel run //:gazelle -- update-repos \
+    -from_file=go.mod \
+    -prune \
+    -to_macro=repositories.bzl%go_repositories