chore: import upstream snapshot with attribution

python/ray/_private/runtime_env/BUILD.bazel

@@ -0,0 +1,42 @@
+# TODO(hjiang): All existing pythons are not using bazel as build system, which leads to missing BUILD file and targets.
+# Revisit if we decide to support bazel build in the future.
+
+load("@rules_python//python:defs.bzl", "py_library")
+
+package(default_visibility = ["//visibility:public"])
+
+py_library(
+    name = "validation",
+    srcs = ["validation.py"],
+)
+
+py_library(
+    name = "utils",
+    srcs = ["utils.py"],
+)
+
+py_library(
+    name = "virtualenv_utils",
+    srcs = ["virtualenv_utils.py"],
+    deps = [
+        ":utils",
+    ],
+)
+
+py_library(
+    name = "dependency_utils",
+    srcs = ["dependency_utils.py"],
+    deps = [
+        ":utils",
+    ],
+)
+
+py_library(
+    name = "uv",
+    srcs = ["uv.py"],
+    deps = [
+        ":dependency_utils",
+        ":utils",
+        ":virtualenv_utils",
+    ],
+)