refactor: move external repositories to src/external (tier4#374)

* refactor: move external repositories to src/external

Signed-off-by: Esteve Fernandez <esteve.fernandez@tier4.jp>

* restructure the repos file

Signed-off-by: M. Fatih Cırıt <mfc@leodrive.ai>

* remove empty lines

Signed-off-by: M. Fatih Cırıt <mfc@leodrive.ai>

* Update autoware.repos

Co-authored-by: Kenji Miyake <31987104+kenji-miyake@users.noreply.github.com>

Co-authored-by: M. Fatih Cırıt <mfc@leodrive.ai>
Co-authored-by: M. Fatih Cırıt <xmfcx@users.noreply.github.com>
Co-authored-by: Kenji Miyake <31987104+kenji-miyake@users.noreply.github.com>

autoware.repos

@@ -1,9 +1,5 @@
 repositories:
   # core
-  core/tmp/autoware_auto_msgs:
-    type: git
-    url: https://github.com/tier4/autoware_auto_msgs.git # TODO(Tier IV): Move to autowarefoundation/autoware_msgs
-    version: tier4/main
   core/autoware_msgs:
     type: git
     url: https://github.com/autowarefoundation/autoware_msgs.git
@@ -16,32 +12,36 @@ repositories:
     type: git
     url: https://github.com/autowarefoundation/autoware.core.git
     version: main
+  core/external/autoware_auto_msgs: # TODO(mfc): Remove when autoware_msgs is merged
+    type: git
+    url: https://github.com/tier4/autoware_auto_msgs.git
+    version: tier4/main
   # universe
   universe/autoware.universe:
     type: git
     url: https://github.com/autowarefoundation/autoware.universe.git
     version: main
-  universe/tmp/tier4_ad_api_adaptor:
+  universe/external/tier4_ad_api_adaptor: # TODO(TIER IV): Improve design/code and transfer to AWF
     type: git
     url: https://github.com/tier4/tier4_ad_api_adaptor.git
     version: tier4/universe
-  universe/extension_msgs/tier4_autoware_msgs:
+  universe/external/tier4_autoware_msgs:
     type: git
     url: https://github.com/tier4/tier4_autoware_msgs.git
     version: tier4/universe
-  universe/vendor/grid_map:
+  universe/external/grid_map:
     type: git
     url: https://github.com/ANYbotics/grid_map.git
     version: ba2f9cb6e62f7ee9c5bac7401391a211e442e459
-  universe/vendor/muSSP:
+  universe/external/muSSP:
     type: git
     url: https://github.com/tier4/muSSP.git
     version: tier4/main
-  universe/vendor/ndt_omp:
+  universe/external/ndt_omp:
     type: git
     url: https://github.com/tier4/ndt_omp.git
     version: tier4/main
-  universe/vendor/pointcloud_to_laserscan:
+  universe/external/pointcloud_to_laserscan:
     type: git
     url: https://github.com/tier4/pointcloud_to_laserscan.git
     version: tier4/main
@@ -51,15 +51,15 @@ repositories:
     url: https://github.com/autowarefoundation/autoware_launch.git
     version: main
   # sensor_component
-  sensor_component/sensor_component_description:
+  sensor_component/external/sensor_component_description:
     type: git
     url: https://github.com/tier4/sensor_component_description.git
     version: main
-  sensor_component/tamagawa_imu_driver:
+  sensor_component/external/tamagawa_imu_driver:
     type: git
     url: https://github.com/tier4/tamagawa_imu_driver.git
     version: ros2
-  sensor_component/velodyne_vls:
+  sensor_component/external/velodyne_vls:
     type: git
     url: https://github.com/tier4/velodyne_vls.git
     version: tier4/universe
@@ -73,7 +73,7 @@ repositories:
     type: git
     url: https://github.com/autowarefoundation/sample_vehicle_launch.git
     version: main
-  vehicle/pacmod_interface:
+  vehicle/external/pacmod_interface:
     type: git
     url: https://github.com/tier4/pacmod_interface.git
     version: main