[CI] add GitHub Actions for build check and auto-release

[ricky-chaoju]

Summary

• Add CI workflow: compile check and ShellCheck on PRs/pushes to main
• Add Release workflow: auto-create GitHub Release on version tag push
• Add make check target to Makefile

Details

CI (ci.yml)

• build job: installs dependencies and runs make check (compiles all .o files without linking, since GitHub runners have no GPU/libnvidia-ml.so)
• shellcheck job: lints all shell scripts under scripts/

Release (release.yml)

• Triggered on v* tag push
• Verifies tag version matches NVFD_VERSION in include/nvfd.h
• Auto-generates release notes from commit log since previous tag
• Creates GitHub Release via softprops/action-gh-release

Usage

• CI runs automatically on PR and push to main
• To release: update NVFD_VERSION in nvfd.h, then git tag v1.2 && git push --tags

[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the project's development and release processes by introducing robust CI/CD pipelines. It automates code quality checks for every change and streamlines the release process by automatically generating GitHub releases upon version tagging. These additions aim to improve code reliability, reduce manual overhead, and provide a more consistent release cadence.

Highlights

• Continuous Integration (CI) Workflow: A new CI workflow has been implemented to perform compile checks and ShellCheck on pull requests and pushes to the main branch, ensuring code quality and build integrity.
• Automated Release Workflow: An automated release workflow has been added, which triggers on version tag pushes (e.g., 'v1.2') to automatically create GitHub Releases, including generating release notes from commit logs.
• Makefile Enhancements: A new 'check' target has been added to the Makefile, allowing developers to easily compile all source files without linking, which is useful for quick syntax and build verification.

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Changelog

• Makefile
  • Added 'check' to the .PHONY declaration.
  • Introduced a new 'check' target that compiles all object files without linking, providing a quick way to verify compilation.

Ignored Files

• Ignored by pattern: .github/workflows/** (2)
  • .github/workflows/ci.yml
  • .github/workflows/release.yml

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[gemini-code-assist]

Code Review

This pull request introduces a check target in the Makefile to support a new CI workflow. This target compiles all source files into object files without linking, which is useful for build checks in environments without the necessary libraries for linking. The implementation correctly sets up the dependencies to achieve this. No issues were found in the submitted changes.