third_party/rust: update rules_rust and deps

This is required for rules_rust to work with CC toolchains.

Change-Id: I15f20c7bde09697fda248f7107be8bcd00e24d57
Reviewed-on: https://review.monogon.dev/c/monogon/+/1073
Tested-by: Jenkins CI
Reviewed-by: Lorenz Brun <lorenz@monogon.tech>
diff --git a/third_party/rust/cargo/remote/BUILD.bazel b/third_party/rust/cargo/remote/BUILD.bazel
index e69de29..b49fb68 100644
--- a/third_party/rust/cargo/remote/BUILD.bazel
+++ b/third_party/rust/cargo/remote/BUILD.bazel
@@ -0,0 +1,17 @@
+# Export file for Stardoc support
+exports_files(
+    glob([
+        "**/*.bazel",
+        "**/*.bzl",
+    ]),
+    visibility = ["//visibility:public"],
+)
+
+filegroup(
+    name = "srcs",
+    srcs = glob([
+        "**/*.bazel",
+        "**/*.bzl",
+    ]),
+    visibility = ["//visibility:public"],
+)