Create CODEOWNERS
Create a CODEOWNERS file that matches subteams to code paths.
diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
new file mode 100644
index 0000000..1f405ce
--- /dev/null
+++ b/.github/CODEOWNERS
@@ -0,0 +1,36 @@
+/src/ @protocolbuffers/protobuf-compiler
+
+/src/google/protobuf/compiler/cpp @protocolbuffers/protobuf-cpp
+
+/csharp/ @protocolbuffers/protobuf-csharp
+/src/google/protobuf/compiler/csharp/ @protocolbuffers/protobuf-csharp
+
+/docs/ @protocolbuffers/protobuf-docs
+/examples/ @protocolbuffers/protobuf-docs
+
+/java/ @protocolbuffers/protobuf-java
+/src/google/protobuf/compiler/java/ @protocolbuffers/protobuf-java
+
+/java/kotlin-lite/ @protocolbuffers/protobuf-kotlin
+/java/kotlin/ @protocolbuffers/protobuf-kotlin
+
+/objectivec/ @protocolbuffers/protobuf-objc/
+/src/google/protobuf/compiler/objectivec/ @protocolbuffers/protobuf-objc
+
+/php/ @protocolbuffers/protobuf-php
+/src/google/protobuf/compiler/php/ @protocolbuffers/protobuf-php
+
+/python/ @protocolbuffers/protobuf-python
+/src/google/protobuf/compiler/python/
+
+/ruby/ @protocolbuffers/protobuf-ruby
+/src/google/protobuf/compiler/ruby/ @protocolbuffers/protobuf-ruby
+
+/build_defs/ @protocolbuffers/protobuf-btr
+/cmake/ @protocolbuffers/protobuf-btr
+/pkg/ @protocolbuffers/protobuf-btr
+/toolchain/ @protocolbuffers/protobuf-btr
+/conformance/ @protocolbuffers/protobuf-btr
+/kokoro/ @protocolbuffers/protobuf-btr
+/third_party/ @protocolbuffers/protobuf-btr
+*.bazel @protocolbuffers/protobuf-btr
