Add C++ and CMake pre-commit hooks

[kluge7]

This PR adds ROS 2 pre-commit hooks for C++ (cppcheck, cpplint) and CMake (ament_lint_cmake), along with a GitHub Actions workflow to run them since they are not supported by pre-commit ci

Remaining work: Fix the issues flagged by the new hooks.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 0.00%. Comparing base (02ec978) to head (1b00b0c).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...ring/include/image_filters/image_filtering_ros.hpp	0.00%	1 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff          @@
##            main      #8   +/-   ##
=====================================
  Coverage   0.00%   0.00%           
=====================================
  Files          3       3           
  Lines        254     234   -20     
  Branches      18      18           
=====================================
+ Misses       254     234   -20     

Flag	Coverage Δ
unittests	0.00% <0.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
image-filtering/src/image_filtering_ros.cpp	0.00% <ø> (ø)
...ring/include/image_filters/image_filtering_ros.hpp	0.00% <0.00%> (ø)

... and 1 file with indirect coverage changes

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[Copilot]

Pull Request Overview

This PR improves code quality and CI configuration by standardizing header guards to follow ROS2 conventions, fixing code style issues, and adding pre-commit hooks for automated linting.

• Updated header guards to use the ROS2 naming convention with double underscores and trailing underscores
• Fixed minor code style issues (empty destructor braces, static const ordering, include statements)
• Added pre-commit configuration with ament linters and GitHub workflow integration

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
image-filtering/include/image_filters/image_processing.hpp	Updated header guards to ROS2 convention, added <string> include, reordered static const keywords
image-filtering/include/image_filters/image_filtering_ros.hpp	Updated header guards to ROS2 convention, added <memory> and <string> includes, fixed empty destructor braces
image-filtering/src/image_filtering_ros.cpp	Removed unnecessary blank line
.pre-commit-config-local.yaml	Added local pre-commit configuration with ament linters for C++ and CMake
.github/workflows/pre-commit.yml	Added GitHub workflow for automated pre-commit checks

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