fix: always include files from the same workspace as the build target…

… in `copy_to_directory`

Fixes bazel-contrib#359.

This updates the `copy_to_directory` tool to accept a workspace name representing the workspace of the target it is executing under. Any files in this workspace are automatically included, regardless of the `include_external_repositories` option. This makes it support usage within an external target (such as `@wksp//:dir`).

lib/private/copy_to_directory.bzl

@@ -836,7 +836,7 @@ def copy_to_directory_bin_action(
         inputs = file_inputs + [config_file],
         outputs = [dst],
         executable = copy_to_directory_bin,
-        arguments = [config_file.path],
+        arguments = [config_file.path, ctx.label.workspace_name],
         mnemonic = "CopyToDirectory",
         progress_message = "Copying files to directory %s" % _progress_path(dst),
         execution_requirements = _COPY_EXECUTION_REQUIREMENTS,