chore(bazel): add MODULE.bazel files for bzlmod (#400)

* Minor build change to make bzlmod happy

* Remove gRPC dependency from MODULE.bazel

* Consolidation of all test protos onto canonical format

* Prune dependencies from cel-spec MODULE.bazel

* Update the bazelversion to 7.0.1

* Configure rules_python to ignore root user error

* Update conformance tests to refer to canonical protos

* Update go.mod, go.sum

* Remove extra go-dep from bazel-mod

.bazelversion

@@ -1,2 +1,2 @@
-6.4.0
+7.0.1
 # Keep this pinned version in parity with cel-go

.gitignore

@@ -1 +1,2 @@
 bazel-*
+MODULE.bazel.lock

MODULE.bazel

@@ -0,0 +1,70 @@
+module(
+    name = "cel-spec",
+)
+
+bazel_dep(
+    name = "bazel_skylib",
+    version = "1.7.1",
+)
+bazel_dep(
+    name = "gazelle",
+    version = "0.36.0",
+    repo_name = "bazel_gazelle",
+)
+bazel_dep(
+    name = "googleapis",
+    version = "0.0.0-20240819-fe8ba054a",
+    repo_name = "com_google_googleapis",
+)
+bazel_dep(
+    name = "protobuf",
+    version = "26.0",
+    repo_name = "com_google_protobuf",
+)
+bazel_dep(
+    name = "rules_cc",
+    version = "0.0.9",
+)
+bazel_dep(
+    name = "rules_go",
+    version = "0.49.0",
+    repo_name = "io_bazel_rules_go",
+)
+bazel_dep(
+    name = "rules_java",
+    version = "7.6.5",
+)
+bazel_dep(
+    name = "rules_proto",
+    version = "6.0.0",
+)
+bazel_dep(
+    name = "rules_python",
+    version = "0.35.0",
+)
+
+### PYTHON ###
+python = use_extension("@rules_python//python/extensions:python.bzl", "python")
+python.toolchain(
+    ignore_root_user_error = True,
+    python_version = "3.11",
+)
+
+switched_rules = use_extension("@com_google_googleapis//:extensions.bzl", "switched_rules")
+switched_rules.use_languages(
+    cc = True,
+    go = True,
+    java = True,
+)
+use_repo(switched_rules, "com_google_googleapis_imports")
+
+go_sdk = use_extension("@io_bazel_rules_go//go:extensions.bzl", "go_sdk")
+go_sdk.download(version = "1.21.1")
+
+go_deps = use_extension("@bazel_gazelle//:extensions.bzl", "go_deps")
+go_deps.from_file(go_mod = "//:go.mod")
+use_repo(
+    go_deps,
+    "org_golang_google_genproto_googleapis_rpc",
+    "org_golang_google_protobuf",
+)

cloudbuild.yaml

@@ -1,5 +1,5 @@
 steps:
-- name: 'gcr.io/cloud-builders/bazel:6.4.0'
+- name: 'gcr.io/cloud-builders/bazel:7.0.1'
   entrypoint: bazel
   args: ['build', '...']
   id: bazel-build

conformance/BUILD.bazel

@@ -0,0 +1,34 @@
+# Copyright 2024 Google LLC
+#
+# 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
+#
+#      https://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("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+package(
+    default_visibility = ["//visibility:public"],
+    licenses = ["notice"],  # Apache 2.0
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "conformance_service.pb.go",
+    ],
+    importpath = "cel.dev/expr/conformance",
+    deps = [
+        "//:expr",
+        "@org_golang_google_genproto_googleapis_rpc//status:go_default_library",
+        "@org_golang_google_protobuf//reflect/protoreflect",
+        "@org_golang_google_protobuf//runtime/protoimpl",
+    ],
+)