[github actions] Add CI/CD

.github/workflows/dotnet.yml

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+name: .NET
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    name: "Build & Test"
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v2
+      with:
+        dotnet-version: 6.0.x
+
+    - name: Add NuGet source
+      run: dotnet nuget add source --username oliverbooth --password ${{ secrets.GITHUB_TOKEN }} --store-password-in-clear-text --name github "https://nuget.pkg.github.com/oliverbooth/index.json"
+
+    - name: Restore dependencies
+      run: dotnet restore
+
+    - name: Build
+      run: dotnet build --no-restore --configuration Release
+
+    - name: Test
+      run: dotnet test --no-build --verbosity normal --configuration Release

.github/workflows/nightly.yml

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+name: Publish Nightly
+
+on:
+  push:
+    branches:
+      - develop
+
+jobs:
+  nightly:
+    runs-on: ubuntu-latest
+    if: "!contains(format('{0} {1}', github.event.head_commit.message, github.event.pull_request.title), '[ci-skip]')"
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v2
+      with:
+        dotnet-version: 6.0.x
+
+    - name: Add GitHub NuGet source
+      run: dotnet nuget add source --username oliverbooth --password ${{ secrets.GITHUB_TOKEN }} --store-password-in-clear-text --name github "https://nuget.pkg.github.com/oliverbooth/index.json"
+
+    - name: Restore dependencies
+      run: dotnet restore
+
+    - name: Build
+      run: dotnet build -c Debug
+
+    - name: Build NuGet package
+      run: |
+        mkdir build
+        dotnet pack VpSharp -p:SymbolPackageFormat=snupkg --include-symbols --include-source -o build -p:VersionSuffix='nightly' -p:BuildNumber=${{ github.run_number }}
+
+    - name: Push NuGet Package to GitHub
+      run: dotnet nuget push "build/*" --source "github" --api-key ${{ secrets.GITHUB_TOKEN }} --skip-duplicate
+
+    - name: Push NuGet Package to nuget.org
+      run: dotnet nuget push "build/*" --source https://api.nuget.org/v3/index.json --api-key ${{ secrets.NUGET_API_KEY }} --skip-duplicate

.github/workflows/prerelease.yml

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+name: Tagged Pre-Release
+
+on:
+  push:
+    tags:
+      - "v[0-9]+.[0-9]+.[0-9]+-*"
+
+jobs:
+  prerelease:
+    name: "Tagged Pre-Release"
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v2
+      with:
+        dotnet-version: 6.0.x
+
+    - name: Add GitHub NuGet source
+      run: dotnet nuget add source --username oliverbooth --password ${{ secrets.GITHUB_TOKEN }} --store-password-in-clear-text --name github "https://nuget.pkg.github.com/oliverbooth/index.json"
+
+    - name: Restore dependencies
+      run: dotnet restore
+
+    - name: Build
+      run: dotnet build -c Release
+
+    - name: Build NuGet package
+      run: |
+        mkdir build
+        dotnet pack VpSharp -p:SymbolPackageFormat=snupkg --include-symbols --include-source -o build -p:VersionSuffix='prerelease' -p:BuildNumber=${{ github.run_number }}
+
+    - name: Push NuGet Package to GitHub
+      run: dotnet nuget push "build/*" --source "github" --api-key ${{ secrets.GITHUB_TOKEN }} --skip-duplicate
+
+    - name: Push NuGet Package to nuget.org
+      run: dotnet nuget push "build/*" --source https://api.nuget.org/v3/index.json --api-key ${{ secrets.NUGET_API_KEY }} --skip-duplicate
+
+    - name: Create Release
+      uses: "marvinpinto/action-automatic-releases@latest"
+      with:
+        repo_token: "${{ secrets.GITHUB_TOKEN }}"
+        prerelease: true

.github/workflows/release.yml

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+name: Tagged Release
+
+on:
+  push:
+    tags:
+      - "v[0-9]+.[0-9]+.[0-9]+"
+
+jobs:
+  release:
+    name: "Tagged Release"
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v2
+      with:
+        dotnet-version: 6.0.x
+
+    - name: Add GitHub NuGet source
+      run: dotnet nuget add source --username oliverbooth --password ${{ secrets.GITHUB_TOKEN }} --store-password-in-clear-text --name github "https://nuget.pkg.github.com/oliverbooth/index.json"
+
+    - name: Restore dependencies
+      run: dotnet restore
+
+    - name: Build
+      run: dotnet build -c Release
+
+    - name: Build NuGet package
+      run: |
+        mkdir build
+        dotnet pack VpSharp -p:SymbolPackageFormat=snupkg --include-symbols --include-source -o build
+
+    - name: Push NuGet Package to GitHub
+      run: dotnet nuget push "build/*" --source "github" --api-key ${{ secrets.GITHUB_TOKEN }} --skip-duplicate
+
+    - name: Push NuGet Package to nuget.org
+      run: dotnet nuget push "build/*" --source https://api.nuget.org/v3/index.json --api-key ${{ secrets.NUGET_API_KEY }} --skip-duplicate
+
+    - name: Create Release
+      uses: "marvinpinto/action-automatic-releases@latest"
+      with:
+        repo_token: "${{ secrets.GITHUB_TOKEN }}"
+        prerelease: false