housekeeping: Use GitHub Actions (#258)

* housekeeping: Use GitHub Actions

* migrate tests you netcoreapp3.1

* migrated api approval to 3.1

* fixing approval

* adding coverlet msbuild

* revert shouldly

* removed cake files

remove azure pipelines yaml

* removed net 4.7.2 test target

* migrated to fluent assertions

* changed README build status

.github/workflows/ci-build.yml

@@ -0,0 +1,134 @@
+name: Build
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    types: [opened, synchronize, reopened, closed]
+    branches: [ main ]
+
+env:
+  configuration: Release
+  productNamespacePrefix: "Sextant"
+
+jobs:
+  build:
+    runs-on: windows-latest
+    outputs:
+      nbgv: ${{ steps.nbgv.outputs.SemVer2 }}
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+
+    - name: Install .NET Core
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 3.1.x
+
+    - name: Use Node.js
+      uses: actions/setup-node@v1
+      with:
+        node-version: '12.x'
+
+    - name: NuGet restore
+      run: dotnet restore
+      working-directory: src
+
+    - name: NBGV
+      id: nbgv
+      uses: dotnet/nbgv@master
+      with:
+        setAllVars: true
+
+    - name: Add MSBuild to PATH
+      uses: microsoft/setup-msbuild@v1
+
+    - name: Build
+      run: msbuild /t:build,pack /maxcpucount /p:NoPackageAnalysis=true /verbosity:minimal /p:Configuration=${{ env.configuration }}
+      working-directory: src
+
+    - name: Run Unit Tests and Generate Coverage
+      uses: glennawatson/coverlet-msbuild@v1
+      with:
+        project-files: '**/*Tests*.csproj'
+        no-build: true
+        exclude-filter: '[${{env.productNamespacePrefix}}*Tests.*]*'
+        include-filter: '[${{env.productNamespacePrefix}}*]*'
+        output-format: opencover
+        merge-with: '../../artifacts/coverage/coverage.json'
+        output: '../../artifacts/coverage/'
+        configuration: ${{ env.configuration }}
+
+    - name: Combine Coverage Reports
+      shell: bash
+      run: |
+        dotnet tool install --global dotnet-reportgenerator-globaltool
+        reportgenerator -reports:artifacts/coverage/*.xml -targetdir:artifacts/finalcoverage  -reporttypes:Cobertura
+
+    - name: Upload Code Coverage
+      run: |
+        npm install -g codecov
+        codecov
+      working-directory: artifacts/finalcoverage
+      env:
+        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+
+    - name: Create NuGet Artifacts
+      uses: actions/upload-artifact@master
+      with:
+        name: nuget
+        path: '**/*.nupkg'
+
+  release:
+    runs-on: ubuntu-latest
+    needs: build
+    if: contains(github.event.pull_request.labels.*.name, 'release') && github.event_name == 'pull_request' && github.event.action == 'closed' && github.event.pull_request.merged == true
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+
+    - name: Download NuGet Packages
+      uses: actions/download-artifact@v2
+      with:
+        name: nuget
+
+    - name: Save SignClient Configuration
+      run: 'echo "$SIGN_CLIENT_CONFIG" > SignPackages.json'
+      shell: bash
+      env:
+        SIGN_CLIENT_CONFIG: ${{secrets.SIGN_CLIENT_CONFIG}}
+
+    - name: Sign NuGet Packages
+      uses: glennawatson/signclient@v1
+      with:
+        input-files: '**/*.nupkg'
+        sign-client-secret: ${{ secrets.SIGN_CLIENT_SECRET }}
+        sign-client-user: ${{ secrets.SIGN_CLIENT_USER_ID }}
+        project-name: reactiveui
+        description: reactiveui
+        config-file: SignPackages.json
+
+    - name: Changelog
+      uses: glennawatson/ChangeLog@v1
+      id: changelog
+
+    - name: Create Release
+      uses: actions/create-release@v1
+      env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # This token is provided by Actions, you do not need to create your own token
+      with:
+          tag_name: ${{ needs.build.outputs.nbgv }}
+          release_name: ${{ needs.build.outputs.nbgv }}
+          body: |
+            ${{ steps.changelog.outputs.commitLog }}
+
+    - name: NuGet Push
+      env:
+        NUGET_AUTH_TOKEN: ${{ secrets.NUGET_API_KEY }}
+        SOURCE_URL: https://api.nuget.org/v3/index.json
+      run: |
+        dotnet nuget push -s ${{ env.SOURCE_URL }} -k ${{ env.NUGET_AUTH_TOKEN }} **/*.nupkg

README.md

@@ -1,6 +1,6 @@
 ## Sextant
 
-[![NuGet Stats](https://img.shields.io/nuget/v/sextant.svg)](https://www.nuget.org/packages/sextant) [![Build Status](https://dev.azure.com/dotnet/ReactiveUI/_apis/build/status/Sextant-CI)](https://dev.azure.com/dotnet/ReactiveUI/_build/latest?definitionId=76) [![Code Coverage](https://codecov.io/gh/reactiveui/sextant/branch/main/graph/badge.svg)](https://codecov.io/gh/reactiveui/sextant)
+[![NuGet Stats](https://img.shields.io/nuget/v/sextant.svg)](https://www.nuget.org/packages/sextant) ![Build](https://github.com/reactiveui/Sextant/workflows/Build/badge.svg) [![Code Coverage](https://codecov.io/gh/reactiveui/sextant/branch/main/graph/badge.svg)](https://codecov.io/gh/reactiveui/sextant)
 <br>
 <a href="https://www.nuget.org/packages/sextant">
         <img src="https://img.shields.io/nuget/dt/sextant.svg">