… physics plugin (#614)

# Pull Request

## Description
Added a Raycast utility function

## Related Issues (Optional, put "None" if there are no related issues)
Fixes #595 

## Type of Change
<!-- Please delete options that are not relevant. -->

- New feature (non-breaking change which adds functionality)

## Changes Made
List of the main changes in this PR:
- Added `CastRay` method
- New `Ray` struct
- New `HitRecord` struct

## Testing (Optional, put "None" if you didn't have to test anything)
<!-- Describe the tests you ran to verify your changes. Please delete
options that are not relevant. -->
- Unit tests pass (`xmake test`)
- Code follows the project's style guidelines (`clang-format`)

### Test Environment
- OS: macOS
- Compiler: Clang

## Documentation
<!-- Please delete options that are not relevant. -->

None

## Checklist (Don't delete any options)
- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my own code
- [x] I have commented my code, particularly in hard-to-understand areas
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [x] Any dependent changes have been merged and published

## Time Spent (Optional, put "None" if you don't know)
<!-- Put here the time you were actively working on it like: 5 minutes,
4 hours, some days, at least 1 month -->
less that 1h

## Screenshots/Videos (Optional, put "None" if it's not relevant)
<!-- Add screenshots or videos to help explain your changes. -->
None

## Breaking Changes (Optional, Put "None" if there are no breaking
changes)
<!-- If this PR introduces breaking changes, describe them here and
provide migration instructions. -->
None

## Additional Notes (Optional, Put "None" if there are no additional
notes)
<!-- Any additional information that reviewers should know. -->
None


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Ray-casting support to detect intersections between rays and physics
objects in the world, returning hit time and target entity.

* **API Improvements**
* Added a read-only accessor for the physics system to enable const-safe
queries.

* **Tests**
* New tests covering ray-casting: scenarios with and without hits,
validating returned entity and intersection time.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

# Pull Request

## Description
Add 2 scripts, one to create a plugin from a template and another to
verify existing plugins structure. I also added documentation in the
wiki.

## Related Issues (Optional, put "None" if there are no related issues)
Fixes #453 

## Type of Change
<!-- Please delete options that are not relevant. -->

- Project related stuff

## Changes Made
List of the main changes in this PR:
- Script 1: create a new plugin from a template
- Script 2: verify plugins
- Added documentation in wiki

## Testing (Optional, put "None" if you didn't have to test anything)
<!-- Describe the tests you ran to verify your changes. Please delete
options that are not relevant. -->
- Manual testing performed (describe what you tested): run `xmake plugin
-v` and `xmake plugin -c`

### Test Environment
- OS: macOS
- Compiler: Clang

## Documentation
<!-- Please delete options that are not relevant. -->

- I have updated the relevant documentation

## Checklist (Don't delete any options)
- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my own code
- [x] I have commented my code, particularly in hard-to-understand areas
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [x] Any dependent changes have been merged and published

## Time Spent (Optional, put "None" if you don't know)
<!-- Put here the time you were actively working on it like: 5 minutes,
4 hours, some days, at least 1 month -->
2 hours

## Screenshots/Videos (Optional, put "None" if it's not relevant)
<!-- Add screenshots or videos to help explain your changes. -->
None

## Breaking Changes (Optional, Put "None" if there are no breaking
changes)
<!-- If this PR introduces breaking changes, describe them here and
provide migration instructions. -->
None

## Additional Notes (Optional, Put "None" if there are no additional
notes)
<!-- Any additional information that reviewers should know. -->
None


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

## Release Notes

* **New Features**
  * Added plugin template system and tooling to support plugin creation.

* **Refactor**
* Updated include paths and build configuration structure across the
project.

* **Tests**
  * Reorganized include directives in test files.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->