Properly fetch dependencies when used with bzlmod

Author: HoloRin

MODULE.bazel

@@ -3,3 +3,13 @@ module(
     version = "2.3.0",
     compatibility_level = 2,
 )
+
+download_xrefr = use_extension(
+    "@rules_erlang//bzlmod:extensions.bzl",
+    "download_xrefr",
+)
+
+use_repo(
+    download_xrefr,
+    "xrefr",
+)

bzlmod/BUILD.bazel

@@ -0,0 +1,8 @@
+load("//:rules_erlang.bzl", "rules_erlang_dependencies")
+
+def _download_xrefr(ctx):
+    rules_erlang_dependencies()
+
+download_xrefr = module_extension(
+    implementation = _download_xrefr,
+)