Ros2 readme update

[rafal-gorecki]

Description

• Remove building diff_drive after humble sync with Improved tf_prefix based on namespace ros-controls/ros2_controllers#1420
• Fix rviz.launch.py namespace prefixes

Requirements

• Code style guidelines followed
• Documentation updated

Tests 🧪

• Robot
• Container
• Simulation

Summary by CodeRabbit

Release Notes

• Documentation

  • Updated README with corrected repository name and import paths
  • Modified repository cloning instructions

• Configuration

  • Removed diff_drive_controller from Docker build process for hardware and simulation environments
  • Updated RViz configuration:
    • Adjusted grid vertical positioning
    • Changed grid reference frame

• Minor Improvements

  • Refined namespace handling in launch configuration

[coderabbitai]

Walkthrough

This pull request involves updates to multiple files across the Husarion UGV ROS 2 project. The changes primarily focus on modifying documentation, Docker build configurations, and RViz visualization settings. The repository name has been updated in the README, Docker files have had the diff_drive_controller copying step removed, the RViz launch script has been adjusted for namespace handling, and the RViz configuration file has been modified with grid display changes.

Changes

File	Change Summary
README.md	Updated repository name from husarion_ugv to husarion_ugv_ros in clone and dependency import instructions; modified build command to include -DBUILD_TESTING=OFF
docker/Dockerfile.hardware docker/Dockerfile.simulation	Removed line copying diff_drive_controller from src/ros2_controllers
husarion_ugv_description/launch/rviz.launch.py	Modified namespace conditional expression logic
husarion_ugv_description/rviz/husarion_ugv.rviz	Updated Grid display Z-coordinate to -0.18 and changed Reference Frame to <Fixed Frame>

Possibly related PRs

• Readme files minor fixes  #463: Changes in husarion_ugv_controller package documentation
• Update diagnostics package readme file #475: README updates for husarion_ugv_diagnostics package to ensure parameter value consistency
• Changed add joints to use_joint_state_publisher | added joint state p… #470: Modifications in the README.md for Husarion UGV project related to launch arguments and configurations

Suggested reviewers

• KmakD

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