Add presubmit workflows.

.github/workflows/build-test.yml

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+# Copyright 2023 The Cross-Media Measurement 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.
+
+name: Build and test
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+    types: [opened, synchronize, edited]
+  workflow_dispatch:
+
+jobs:
+  build-test:
+    name: Build and test
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Check out revision
+        uses: actions/checkout@v3
+
+      - name: Set up Bazel
+        run: |
+          mkdir -p ~/.local/bin
+          bazelisk_path="$(which bazelisk)"
+          ln -s "${bazelisk_path}" ~/.local/bin/bazel
+
+      - name: Bazel build
+        run: |
+          bazel build //...
+
+      - name: Bazel test
+        id: run-tests
+        run: |
+          bazel test //... || (( $? == 4 ))
+      
+      - name: Upload Bazel testlogs
+        if: failure() && steps.run-tests.outcome == 'failure'
+        uses: world-federation-of-advertisers/actions/bazel-upload-testlogs@v2

.github/workflows/lint.yml

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+# Copyright 2023 The Cross-Media Measurement 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.
+
+name: Lint
+
+on:
+  pull_request:
+    branches: [main]
+    types: [opened, synchronize, edited]
+
+jobs:
+  lint:
+    name: Lint changed files
+    runs-on: ubuntu-20.04
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
+
+    - uses: world-federation-of-advertisers/actions/lint@v2
+      with:
+        license-type: apache
+        copyright-holder: The Cross-Media Measurement Authors