Add support for bzlmod

This adds support for bzlmod, which is bazel's new dependency resolution
system.

Theoretically we could now remove the previous dependency management
configuration which required flattening all the dependencies, but I left
it here for now for users using old versions of bazel.

.bazelrc

@@ -16,6 +16,10 @@ build --copt -DGRPC_BAZEL_BUILD
 # Workaround abseil libraries missing symbols
 build:windows --dynamic_mode=off
 
+# Avoid conflicting boringssl/protobuf system brew install
+# https://github.com/bazelbuild/bazel/issues/10472
+build:macos --copt=-isystem/usr/local/include
+
 # Set minimum supported C++ version
 build:macos --host_cxxopt=-std=c++14 --cxxopt=-std=c++14
 build:linux --host_cxxopt=-std=c++14 --cxxopt=-std=c++14

.gitignore

@@ -37,6 +37,7 @@
 *.app
 
 # Bazel files
+MODULE.bazel.lock
 /bazel-*
 
 # Mac

MODULE.bazel

@@ -0,0 +1,25 @@
+# Copyright The OpenTelemetry Authors
+# SPDX-License-Identifier: Apache-2.0
+
+module(
+    name = "opentelemetry-cpp",
+    version = "1.14.2",
+    compatibility_level = 0,
+    repo_name = "io_opentelemetry_cpp",
+)
+
+bazel_dep(name = "abseil-cpp", version = "20240116.1", repo_name = "com_google_absl")
+bazel_dep(name = "bazel_skylib", version = "1.5.0")
+bazel_dep(name = "curl", version = "8.4.0")
+bazel_dep(name = "grpc", version = "1.62.1", repo_name = "com_github_grpc_grpc")
+bazel_dep(name = "nlohmann_json", version = "3.11.3", repo_name = "github_nlohmann_json")
+bazel_dep(name = "opentelemetry-proto", version = "1.1.0", repo_name = "com_github_opentelemetry_proto")
+bazel_dep(name = "opentracing-cpp", version = "1.6.0", repo_name = "com_github_opentracing")
+bazel_dep(name = "platforms", version = "0.0.8")
+bazel_dep(name = "prometheus-cpp", version = "1.2.4", repo_name = "com_github_jupp0r_prometheus_cpp")
+bazel_dep(name = "protobuf", version = "26.0", repo_name = "com_google_protobuf")
+bazel_dep(name = "rules_proto", version = "5.3.0-21.7")
+bazel_dep(name = "zlib", version = "1.3.1.bcr.1")
+
+bazel_dep(name = "google_benchmark", version = "1.8.3", dev_dependency = True, repo_name = "com_github_google_benchmark")
+bazel_dep(name = "googletest", version = "1.14.0.bcr.1", dev_dependency = True, repo_name = "com_google_googletest")

WORKSPACE.bzlmod

@@ -0,0 +1,4 @@
+# Copyright The OpenTelemetry Authors
+# SPDX-License-Identifier: Apache-2.0
+
+# Disables the default WORKSPACE when using bzlmod