Add automatic GitHub Release creation with multi-platform builds for semantic version tags

[Copilot]

Overview

This PR implements automatic GitHub Release creation whenever a new semantic version tag (format x.y.z) is pushed to the repository. The workflow builds the project on multiple platforms and attaches the binaries to the release.

Changes

Added a new GitHub Actions workflow (.github/workflows/release.yml) that:

• Triggers on push of tags matching the semantic versioning pattern (e.g., 1.0.0, 2.3.4)
• Builds the project on Linux, macOS, and Windows using CMake
• Creates platform-specific binaries (cpp_calc-linux-VERSION, cpp_calc-macos-VERSION, cpp_calc-windows-VERSION.exe)
• Automatically creates a GitHub Release for the tag
• Attaches all platform binaries to the release as downloadable assets
• Generates release notes from commit history since the last release
• Sets releases as public (non-draft, non-prerelease)

Usage

To create a new release, simply push a semantic version tag:

git tag 1.0.0
git push origin 1.0.0

The workflow will automatically:

1. Detect the new tag
2. Build the project on all three platforms (Linux, macOS, Windows)
3. Create a GitHub Release named "Release 1.0.0"
4. Upload the built binaries as release assets
5. Generate release notes from commits
6. Publish the release

Technical Details

• Uses CMake for cross-platform builds with Release configuration
• Build matrix includes: ubuntu-latest, macos-latest, windows-latest
• Uses the modern softprops/action-gh-release@v1 action
• Uses actions/upload-artifact@v4 and actions/download-artifact@v4 for artifact management
• Tag pattern: [0-9]+.[0-9]+.[0-9]+ matches semantic versions
• Workflow validated with yamllint to ensure proper formatting
• Includes contents: write permission for release creation

This resolves the issue: "Я хочу чтобы при добавлении каждого нового тега в формате Semver(x.y.z) делался Release" (I want a Release to be created when adding each new tag in Semver format)

Original prompt

Я хочу чтобы при добавлении каждого нового тега в формате Semver(x.y.z) делался Release

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[phoenixofhp]

@copilot
How it will builds? Can't see cmake command in workflow
I also want Windows, Linux and macOS release

[Copilot]

@copilot
How it will builds? Can't see cmake command in workflow
I also want Windows, Linux and macOS release

Added build steps with CMake for all three platforms in commit 9afe716. The workflow now:

• Builds cpp_calc on Linux, macOS, and Windows using cmake -S . -B build -DCMAKE_BUILD_TYPE=Release followed by cmake --build build --config Release
• Creates platform-specific binaries (cpp_calc-linux-VERSION, cpp_calc-macos-VERSION, cpp_calc-windows-VERSION.exe)
• Uploads all binaries to the GitHub Release automatically