Change generated location ros2

[Rick-v-E]

This will change the location of all generated files to $ROS_HOME/virtual_maize_field, which is by default ~/.ros/virtual_maize_field, instead of the install/virtual_maize_field/share/virtual_maize_field/world, install/virtual_maize_field/share/virtual_maize_field/gt, install/virtual_maize_field/share/virtual_maize_field/map and install/virtual_maize_field/share/virtual_maize_field/launch folder.

This is needed when converting this into an official ROS package, otherwise these files will be generated somewhere in /opt/ros/humble/share, which will require sudo to write.

This is however a breaking change, everyone should change their launch file from:

from __future__ import annotations

from os.path import join

from ament_index_python.packages import get_package_share_directory

from launch import LaunchDescription
from launch.actions import IncludeLaunchDescription
from launch.launch_description_sources import PythonLaunchDescriptionSource


def generate_launch_description() -> LaunchDescription:
   spawner_file = join(get_package_share_directory("virtual_maize_field"), "launch", "robot_spawner.launch.py"

    robot_spawner_launch = IncludeLaunchDescription(
        PythonLaunchDescriptionSource([spawner_file]),
        launch_arguments={"robot_name": "<<robot_name>>"}.items(),
    )

    return LaunchDescription([robot_spawner_launch])

to:

from __future__ import annotations

from launch import LaunchDescription
from launch.actions import IncludeLaunchDescription
from launch.launch_description_sources import PythonLaunchDescriptionSource

from virtual_maize_field import get_spawner_launch_file


def generate_launch_description() -> LaunchDescription:
    robot_spawner_launch = IncludeLaunchDescription(
        PythonLaunchDescriptionSource([get_spawner_launch_file()]),
        launch_arguments={"robot_name": "<<robot_name>>"}.items(),
    )

    return LaunchDescription([robot_spawner_launch])

Related: #48

[Rick-v-E]

Closed because conflict. #56