feat: init sim_smart_car_bridge — ROS2 bridge relay for Origincar HTTP API

Bridge image (GET /image → sensor_msgs/Image), IMU (GET /imu → sensor_msgs/Imu),
and cmd_vel (Twist → POST /cmd) between Origincar simulation and ROS2.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

setup.py

@@ -0,0 +1,25 @@
+from setuptools import find_packages, setup
+
+package_name = "origincar_bridge"
+
+setup(
+    name=package_name,
+    version="1.0.0",
+    packages=find_packages(exclude=["test"]),
+    data_files=[
+        ("share/ament_index/resource_index/packages", ["resource/" + package_name]),
+        ("share/" + package_name, ["package.xml"]),
+        ("share/" + package_name + "/launch", ["launch/bridge.launch.py"]),
+    ],
+    install_requires=["setuptools"],
+    zip_safe=True,
+    maintainer="cyy",
+    maintainer_email="user@example.com",
+    description="ROS2 bridge relay: HTTP API ⇄ ROS2 topics (image, IMU, /cmd_vel)",
+    license="Apache-2.0",
+    entry_points={
+        "console_scripts": [
+            "bridge_node = origincar_bridge.bridge_node:main",
+        ],
+    },
+)