Add MATLAB buildtool support for CI tasks

[Copilot]

Adds support for MATLAB's buildtool framework (CodeIssuesTask, TestTask) as an alternative to the existing codecheckToolbox/testToolbox wrapper functions.

buildfile.m (root)

• Defines setup, check, and test tasks using MATLAB's built-in task classes
• check and test depend on setup for path initialization
• Requires R2023b+

buildtool check   % Run code analysis via CodeIssuesTask
buildtool test    % Run tests via TestTask
buildtool         % Both (default tasks)

code/templates/buildfile.m

• Template for downstream projects using MatBox, with conditional installMatBox() guard

GitHub Actions (check-code, test-code)

• Actions now detect buildfile.m at repo root
• Present → matlab-actions/run-build@v2
• Absent → existing run-command fallback (no breaking change)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Suggestion: Use MATLAB's buildtool</issue_title>
<issue_description>Look into using MATLAB's buildtool for the CI tasks</issue_description>

Comments on the Issue (you are @copilot in this section)

@ehennestad MATLAB currently supports the following tasks for the buildtool: | Task Class | Description | |-------------------------------------------|-------------------------------| | `matlab.buildtool.tasks.CodeIssuesTask` | Task for identifying code issues | | `matlab.buildtool.tasks.TestTask` | Task for running tests |

These are more or less equivalent to testToolbox and codecheckToolbox

Pros of matlab.buildtool.tasks

• MATLAB builtin
• CodeIssuesTask supports custom code analyzer configuration
• CodeIssuesTask can save reports

Cons of matlab.buildtool.tasks

• Need custom tasks for custom setup, i.e install requirements, running startup.m etc
• Need separate tasks for creating .svg badges
• Less cutomizable in general</comment_new>
  <comment_new>@ehennestad
  Added branch for trying it out: https://github.com/ehennestad/MatBox/tree/feature/buildtool-support</comment_new>

• Fixes Suggestion: Use MATLAB's buildtool #28

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[github-actions]

Test Results

21 tests   21 ✅  16s ⏱️
 5 suites   0 💤
 1 files     0 ❌

Results for commit cba7561.

[github-actions]

Test Results

21 tests   21 ✅  15s ⏱️
 5 suites   0 💤
 1 files     0 ❌

Results for commit cba7561.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 15 lines in your changes missing coverage. Please review.
✅ Project coverage is 41.51%. Comparing base (2519f3d) to head (cba7561).
⚠️ Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
code/templates/buildfile.m	0.00%	15 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #49      +/-   ##
==========================================
- Coverage   42.02%   41.51%   -0.52%     
==========================================
  Files          59       61       +2     
  Lines        1468     1508      +40     
==========================================
+ Hits          617      626       +9     
- Misses        851      882      +31     

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