refactor(ad_api_visualizers): rework parameter

[prakash-kannaiah]

Description

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Implement the ROS Node configuration layout described in Autoware Foundation Discussion #3371 for the ad_api_visualizers package.

• Remove duplication of parameter declaration between the source code and the parameter file.
• Remove the default value from the source code to ensure all parameter values are passed from the parameter files.
• Use types that match those returned from declare_parameter() to prevent confusion and potential coding errors.
• Move the default parameter file to a standardized location. Use the JSON Schema for that.

Tests performed

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Package built locally with colcon build --symlink-install --cmake-args -DCMAKE_BUILD_TYPE=Release --packages-up-to ad_api_visualizers

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[yukkysaito]

LGTM

[isamu-takagi]

Since the parameter file is not installed, the data_files in setup.py should be as follows:

    data_files=[
        ("share/ament_index/resource_index/packages", [f"resource/{package_name}"]),
        (f"share/{package_name}", ["package.xml"]),
        (f"share/{package_name}/launch", [f"launch/{package_name}.launch.xml"]),
        (f"share/{package_name}/config", [f"config/{package_name}.param.yaml"]),
    ],

[isamu-takagi]

LGTM