Add a soong_zip alias to prebuilts and allowlist all blocked rdeps.

This is an improvement over directly referencing the prebuilt because
bp2build can now emit BUILD files that contain a dep to
//build/soong/zip/cmd:soong_zip even though we're not converting the
soong_zip module.

It helps to make progress despite not having go rules support to
convert/build soong_zip. This unblocks many modules, like genrules and
gensrcs that use soong_zip in tools. soong_zip doesn't change often, so
it's not risky to depend on the prebuilt instead of source version.

Bug: 194644518
Bug: 248222296

Test: bp2build CI
Change-Id: Idef0c27ec0fb43a9097d750ec72fba00644c9f2a

zip/cmd/BUILD.bazel

@@ -0,0 +1,20 @@
+# Copyright (C) 2022 The Android Open Source Project
+#
+# 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.
+
+# TODO(b/194644518): Switch to the source version when Bazel can build go
+# binaries.
+alias(
+    name = "soong_zip",
+    actual = "//prebuilts/build-tools:linux-x86/bin/soong_zip",
+)