Revert "Revert "[Core] add ray-core as code-owner for most of the core code-path (ray-project#32082)" (ray-project#32176)" (ray-project#32190)

This reverts commit 4d526c5.

Author: scv119

.github/CODEOWNERS

@@ -25,8 +25,8 @@
 /python/ray/autoscaler/ @wuisawesome @DmitriGekhtman @ericl
 
 # Metrics
-/src/ray/stats/metric_defs.h @ericl @scv119 @rkooo567
-/src/ray/stats/metric_defs.cc @ericl @scv119 @rkooo567
+/src/ray/stats/metric_defs.h @ray-project/ray-core
+/src/ray/stats/metric_defs.cc @ray-project/ray-core
 
 # Telemetry
 /src/ray/protobuf/usage.proto @pcmoritz @thomasdesr
@@ -35,7 +35,7 @@
 # /src/ray @ray-project/ray-core-cpp
 
 # GCS
-/src/ray/gcs/ @iycheng @scv119 @rkooo567 @ericl
+/src/ray/gcs/ @ray-project/ray-core
 
 # Dependencies
 /python/setup.py @richardliaw @ericl @edoakes
@@ -44,12 +44,12 @@
 /ci/lint/format.sh @richardliaw @ericl @edoakes
 
 # Docker image build script.
-/ci/build/build-docker-images.py @amogkam @krfricke
+/ci/build/build-docker-images.py @amogkam @krfricke @ray-project/ray-core
 
 # Python worker.
-#/python/ray/ @ray-project/ray-core-python
-#!/python/ray/tune/ @ray-project/ray-core-python
-#!/python/ray/rllib/ @ray-project/ray-core-python
+#/python/ray/ @ray-project/ray-core
+#!/python/ray/tune/ @ray-project/ray-core
+#!/python/ray/rllib/ @ray-project/ray-core
 
 # Java worker.
 /java/dependencies.bzl @jovany-wang @kfstorm @raulchen @ericl @iycheng @WangTaoTheTonic
@@ -59,15 +59,15 @@
 /java/api/ @jovany-wang @kfstorm @raulchen @ericl @iycheng @WangTaoTheTonic
 
 # C++ worker
-/cpp/include/ray @SongGuyang @raulchen @kfstorm
+/cpp/include/ray @SongGuyang @raulchen @kfstorm @ray-project/ray-core
 
 # Ray Client
 /src/ray/protobuf/ray_client.proto @ijrsvt @ameerhajali @ckw017
 
 # Runtime Env
 # TODO(SongGuyang): Add new items to guarantee runtime env API compatibility in multiple languages.
-/src/ray/protobuf/runtime_env_common.proto @SongGuyang @raulchen @edoakes @architkulkarni
-/src/ray/protobuf/runtime_env_agent.proto @SongGuyang @raulchen @edoakes @architkulkarni
+/src/ray/protobuf/runtime_env_common.proto @SongGuyang @raulchen @edoakes @architkulkarni @ray-project/ray-core
+/src/ray/protobuf/runtime_env_agent.proto @SongGuyang @raulchen @edoakes @architkulkarni @ray-project/ray-core
 
 # ==== Libraries and frameworks ====