Set up GitHub Actions testing with iPhone platform targeting and add meaningful unit tests

[Copilot]

This PR addresses the long-standing TODO item in CONTRIBUTING.md by implementing GitHub Actions testing infrastructure specifically targeting iPhone/iOS platform and enhancing the test suite with meaningful test cases.

Changes Made

🚀 GitHub Actions Setup

• Added .github/workflows/test.yml with properly configured macOS-based CI pipeline
• Uses official maxim-lobanov/setup-xcode@v1 action for reliable Xcode 15.4 setup
• Configured for macos-14 runner for optimal Xcode compatibility
• Targets iPhone platform specifically using xcodebuild with iOS Simulator destination
• Added platform specifications to Package.swift (iOS 12+, macOS 10.14+) to properly handle UIKit dependencies

✅ Enhanced Testing

Replaced the empty placeholder test with actual functionality tests:

• View Initialization: Tests FDWaveformView can be created with correct default values
• Property Management: Validates boolean flags and color properties work correctly
• Enum Functionality: Tests FDWaveformType equality operators and floorValue property
• Foundation for Growth: Provides structure for expanding test coverage

📚 Documentation Updates

• Updated CONTRIBUTING.md to reflect completed GitHub Actions setup
• Fixed outdated API examples in README.md (resolves Outdated README: play progress and supports animation features #148):
  • Changed progressSamples to highlightedSamples
  • Updated zoomStartSamples/zoomEndSamples to zoomSamples range syntax

Technical Implementation

The workflow configuration ensures iPhone platform targeting:

- name: Build and Test for iOS
  run: |
    # Build for iPhone Simulator using xcodebuild with Swift package
    xcodebuild -scheme FDWaveformView \
      -destination "platform=iOS Simulator,name=iPhone 15,OS=17.5" \
      clean build
    
    # Run tests on iPhone Simulator  
    xcodebuild -scheme FDWaveformView \
      -destination "platform=iOS Simulator,name=iPhone 15,OS=17.5" \
      test

This uses xcodebuild with explicit iOS Simulator destination to ensure builds target iPhone platform rather than macOS, providing proper validation for this UIKit-based iOS library.

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[fulldecent]

@copilot Fix the merge conflicts and also do not create a new recommendations file. Instead, all your recommendations should be in your comment in this pool request

[Copilot]

@copilot Fix the merge conflicts and also do not create a new recommendations file. Instead, all your recommendations should be in your comment in this pool request

Fixed the merge conflicts in README.md by adopting the main branch's range syntax formatting, and removed the RECOMMENDATIONS.md file as requested. The recommendations are now included in the PR description instead. Commit: 7299497

[fulldecent]

@copilot your test failed

study how to set up xcode runner at

https://github.com/marketplace/actions/setup-xcode-version

https://github.com/actions/runner-images/blob/main/images/macos/macos-13-Readme.md#xcode

and then try to make this run

[Copilot]

@copilot your test failed

study how to set up xcode runner at
...

Fixed the GitHub Actions workflow by:

1. Updated Package.swift to specify platform requirements (iOS 12+, macOS 10.14+) since the code uses UIKit
2. Replaced manual Xcode selection with the official maxim-lobanov/setup-xcode@v1 action
3. Changed runner to macos-13 for better Xcode 15.4 compatibility
4. Added iOS build verification using Swift package manager with iOS simulator SDK

The workflow now properly configures the Xcode environment and should build successfully on macOS runners. Commit: f761f11

[fulldecent]

@copilot your build is trying to target macos platform, but it should be building for iphone platform. try again

[Copilot]

@copilot your build is trying to target macos platform, but it should be building for iphone platform. try again

Fixed the workflow to specifically target iPhone platform instead of macOS. Replaced the swift build approach with xcodebuild using explicit iOS Simulator destination: platform=iOS Simulator,name=iPhone 15,OS=17.5. The build now uses xcodebuild -scheme FDWaveformView -destination which ensures iPhone platform targeting. Commit: c764289

[fulldecent]

wfm