chore: import upstream snapshot with attribution

third_party/ruy/BUILD

@@ -0,0 +1,10 @@
+# Ruy is not BLAS
+
+package(
+    # copybara:uncomment default_applicable_licenses = ["//tensorflow:license"],
+    default_visibility = ["//visibility:public"],
+    licenses = ["notice"],
+)
+
+# The LICENSE from this package is used during pip package generation.
+exports_files(["LICENSE"])

third_party/ruy/workspace.bzl

@@ -0,0 +1,14 @@
+"""Loads the ruy library, used by TensorFlow Lite."""
+
+load("//third_party:repo.bzl", "tf_http_archive", "tf_mirror_urls")
+
+def repo():
+    tf_http_archive(
+        name = "ruy",
+        # LINT.IfChange
+        sha256 = "a22c42e80c7bb450db8492728e4742ee66f46d5458c45fe67ce2c9b61240630c",
+        strip_prefix = "ruy-3286a34cc8de6149ac6844107dfdffac91531e72",
+        urls = tf_mirror_urls("https://github.com/google/ruy/archive/3286a34cc8de6149ac6844107dfdffac91531e72.zip"),
+        # LINT.ThenChange(//tensorflow/lite/tools/cmake/modules/ruy.cmake)
+        build_file = "//third_party/ruy:BUILD",
+    )