Build oak_tdx_guest with Bazel

BUG: 349587934
Change-Id: Idc6b7596fb97e2d4b3d10c6d850fbc474a8a1d16

oak_tdx_guest/BUILD

@@ -0,0 +1,32 @@
+#
+# Copyright 2024 The Project Oak Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+load("@rules_rust//rust:defs.bzl", "rust_library")
+
+package(
+    default_visibility = ["//visibility:public"],
+    licenses = ["notice"],
+)
+
+rust_library(
+    name = "oak_tdx_guest",
+    srcs = glob(["src/**"]),
+    deps = [
+        "@oak_crates_index//:bitflags",
+        "@oak_crates_index//:strum",
+        "@oak_crates_index//:x86_64",
+    ],
+)