feat(ci): Add CodeCov test coverage to master branch

[genspark-ai-developer]

Summary

This PR adds CodeCov test coverage integration to the master branch, matching the configuration already present in the refactoring branch.

Changes

• ✅ Added LIBIPC_CODECOV option to CMakeLists.txt
• ✅ Added coverage compilation flags (--coverage, -lgcov) for non-MSVC builds
• ✅ Added CodeCov badge to README.md
• ⚠️ codecov.yml workflow file prepared but requires manual addition due to workflow permissions

codecov.yml Workflow File

The following workflow file needs to be manually added to .github/workflows/codecov.yml:

name: Upload CodeCov Report

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

jobs:
  build:
  
    runs-on: ubuntu-latest

    steps:
    - name: Checkout Code
      uses: actions/checkout@v2

    - name: Configure
      run: cmake -DCMAKE_BUILD_TYPE=Debug -DLIBIPC_BUILD_TESTS=ON -DLIBIPC_CODECOV=ON .

    - name: Build
      run: make -j

    - name: Test
      env:
        LD_LIBRARY_PATH: ./bin
      run: ./bin/test-ipc

    - name: Upload coverage to Codecov
      uses: codecov/codecov-action@v4.0.1
      with:
        verbose: true
      env:
        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

Testing

• CMakeLists.txt changes verified to match refactoring branch configuration
• Badge URL matches the one used in refactoring branch
• Workflow configuration tested against refactoring branch template

Related

• Based on codecov configuration from refactoring branch
• Ensures consistent test coverage reporting across branches