Add Bazel Build (#4)

Add Bazel build files corresponding to rabbitmq/rabbitmq-server#2938

The gnu make build should remain unchanged by theses additions

Author: HoloRin

.github/workflows/build.yaml

@@ -0,0 +1,31 @@
+name: Build
+on: push
+jobs:
+  test:
+    name: build
+    runs-on: ubuntu-18.04
+    strategy:
+      matrix:
+        erlang_version:
+        - "23.2"
+    timeout-minutes: 10
+    steps:
+    - name: CHECKOUT REPOSITORY
+      uses: actions/checkout@v2
+    - name: CONFIGURE OTP & ELIXIR
+      uses: actions/setup-elixir@v1
+      with:
+        otp-version: ${{ matrix.erlang_version }}
+        elixir-version: 1.10.4
+    - name: CONFIGURE BAZEL
+      run: |
+        ERLANG_HOME="$(dirname $(dirname $(which erl)))"
+        cat << EOF >> .bazelrc
+          build --@bazel-erlang//:erlang_version=${{ matrix.erlang_version }}
+          build --@bazel-erlang//:erlang_home=${ERLANG_HOME}
+        EOF
+    #! - name: Setup tmate session
+    #!   uses: mxschmitt/action-tmate@v3
+    - name: BUILD
+      run: |
+        bazelisk build :bazel_erlang_lib

.gitignore

@@ -18,3 +18,6 @@
 
 /rabbitmq_ct_client_helpers.d
 /.rabbitmq_ct_client_helpers.plt
+
+/.bazelrc
+/bazel-*

BUILD.bazel

@@ -0,0 +1,11 @@
+load("@bazel-erlang//:bazel_erlang_lib.bzl", "erlang_lib")
+
+erlang_lib(
+    app_name = "rabbitmq_ct_client_helpers",
+    app_version = "master",
+    deps = [
+        "@rabbitmq-server//deps/amqp_client:bazel_erlang_lib",
+        "@rabbitmq-server//deps/rabbit_common:bazel_erlang_lib",
+        "@rabbitmq_ct_helpers//:bazel_erlang_lib",
+    ],
+)

WORKSPACE.bazel

@@ -0,0 +1,23 @@
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    name = "bazel-erlang",
+    strip_prefix = "bazel-erlang-master",
+    urls = ["https://github.com/rabbitmq/bazel-erlang/archive/master.zip"],
+)
+
+http_archive(
+    name = "rabbitmq-server",
+    strip_prefix = "rabbitmq-server-master",
+    urls = ["https://github.com/rabbitmq/rabbitmq-server/archive/master.zip"],
+)
+
+http_archive(
+    name = "rabbitmq_ct_helpers",
+    strip_prefix = "rabbitmq-ct-helpers-master",
+    urls = ["https://github.com/rabbitmq/rabbitmq-ct-helpers/archive/master.zip"],
+)
+
+load("@rabbitmq-server//:workspace_helpers.bzl", "rabbitmq_external_deps")
+
+rabbitmq_external_deps()