Add coverage workflow

.github/workflows/coverage.yml

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+name: Coverage Report
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+  workflow_dispatch:
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: 8.0.x
+
+    - name: Restore dependencies
+      run: dotnet restore
+
+    - name: Build
+      run: dotnet build --no-restore
+
+    # Add coverlet.collector nuget package to test project - 'dotnet add <TestProject.cspoj> package coverlet
+    - name: Test
+      run: dotnet test --no-build --verbosity normal --collect:"XPlat Code Coverage" --logger trx --results-directory coverage --settings .github/workflows/coverlet.runsettings
+
+    - name: Code Coverage Summary Report
+      uses: irongut/CodeCoverageSummary@v1.3.0
+      with:
+        filename: 'coverage/*/coverage.cobertura.xml'
+        badge: true
+        format: 'markdown'
+        output: 'both'
+
+    - name: Add Coverage PR Comment
+      uses: marocchino/sticky-pull-request-comment@v2
+      if: github.event_name == 'pull_request'
+      with:
+        recreate: true
+        path: code-coverage-results.md
+
+    - name: Write to Job Summary
+      run: cat code-coverage-results.md >> $GITHUB_STEP_SUMMARY
+
+  build-reportgenerator:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: 8.0.x
+
+    - name: Restore dependencies
+      run: dotnet restore
+
+    - name: Build
+      run: dotnet build --no-restore
+
+    # Add coverlet.collector nuget package to test project - 'dotnet add <TestProject.cspoj> package coverlet
+    - name: Test
+      run: dotnet test --no-build --verbosity normal --collect:"XPlat Code Coverage" --logger trx --results-directory coverage --settings .github/workflows/coverlet.runsettings
+
+    - name: Create code coverage report
+      run: |
+        dotnet tool install -g dotnet-reportgenerator-globaltool
+        reportgenerator -reports:coverage/*/coverage.cobertura.xml -targetdir:CodeCoverage -reporttypes:'MarkdownSummaryGithub;Cobertura'
+
+    - name: Write to Job Summary
+      run: cat CodeCoverage/SummaryGithub.md >> $GITHUB_STEP_SUMMARY

.github/workflows/coverlet.runsettings

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+<?xml version="1.0" encoding="utf-8" ?>
+<RunSettings>
+  <DataCollectionRunSettings>
+    <DataCollectors>
+      <DataCollector friendlyName="XPlat code coverage">
+        <Configuration>
+          <Exclude>[CharLS.JpegLS.Benchmark]*,[*]CharLS.JpegLS.Benchmark*</Exclude> <!-- [Assembly-Filter]Type-Filter -->
+        </Configuration>
+      </DataCollector>
+    </DataCollectors>
+  </DataCollectionRunSettings>
+</RunSettings>