Publishes CSS build rules.

Forgot to publish these to the actual NPM repository which is necessary to use them from an external workspace. With this change the `ref/external` branch is compatible with `inline_styles`.

packages/rules_prerender/BUILD.bazel

@@ -25,6 +25,7 @@ publish_files(
     name = "publish_files",
     files = glob(["**/*.bzl"]) + [
         "rollup-default.config.js",
+        "//packages/rules_prerender/css:publish_files",
         "//packages/rules_prerender/declarative_shadow_dom:publish_files",
     ],
     visibility = ["//:__pkg__"],

packages/rules_prerender/css/BUILD.bazel

@@ -1,4 +1,11 @@
 load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
+load("//tools:publish.bzl", "publish_files")
+
+publish_files(
+    name = "publish_files",
+    files = glob(["**/*.bzl"]),
+    visibility = ["//packages/rules_prerender:__pkg__"],
+)
 
 bzl_library(
     name = "css_binaries",

packages/rules_prerender/css/BUILD.publish

@@ -0,0 +1,5 @@
+# This file exists simply so this directory is considered a Bazel package and
+# references to `//packages/rules_prerender/css:*.bzl` will resolve correctly.
+# Without this file, it would need to be `//packages/rules_prerender:css/*.bzl`,
+# meaning paths would be different between the local build of `rules_prerender`
+# and user code loading this through `rules_nodejs` and the `@npm` workspace.