Add github action files.

.github/workflows/publish-prerelease.yml

@@ -0,0 +1,43 @@
+name: Publish Prerelease NuGets
+on:
+  push:
+    branches:
+      - prerelease
+env:
+  TIMESTAMP: $(date +'%s')
+  SOLUTION: Rougamo.Retry.sln
+jobs:
+  publish:
+    name: Build and Publish
+    runs-on: windows-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v3.0.3
+        with:
+          dotnet-version: |
+            3.1.x
+            5.0.x
+            6.0.x
+            7.0.x
+            8.0.x
+
+      - name: Remove Tests
+        run: dotnet sln ${{ env.SOLUTION }} remove (ls -r test/**/*.csproj)
+
+      - name: Restore NuGets
+        run: dotnet restore ${{ env.SOLUTION }}
+
+      - name: Build Solution
+        run: dotnet build --configuration Release --no-restore ${{ env.SOLUTION }} --version-suffix priview-${{ env.TIMESTAMP }}
+
+      - name: Delete exists packages
+        run: rm -r -fo nugets
+
+      - name: Pack Solution
+        run: dotnet pack ${{ env.SOLUTION }} --configuration Release --no-build --version-suffix priview-${{ env.TIMESTAMP }}
+
+      - name: Publish
+        run: dotnet nuget push nugets/**.nupkg -k ${{ secrets.API_KEY }} -s https://api.nuget.org/v3/index.json

.github/workflows/publish-release-tag.yml

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+name: Publish Release NuGets on tag
+on:
+  push:
+    tags:
+      - '*'
+env:
+  SOLUTION: Rougamo.Retry.sln
+jobs:
+  publish:
+    name: Build and Publish
+    runs-on: windows-latest
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v3.0.3
+        with:
+          dotnet-version: |
+            3.1.x
+            5.0.x
+            6.0.x
+            7.0.x
+            8.0.x
+
+      - name: Restore NuGets
+        run: dotnet restore ${{ env.SOLUTION }}
+
+      - name: Build Solution
+        run: dotnet build --configuration Release --no-restore ${{ env.SOLUTION }}
+
+      - name: Run Tests
+        run: dotnet test --configuration Release --no-build ${{ env.SOLUTION }}
+
+      - name: Delete exists packages
+        run: rm -r -fo nugets
+
+      - name: Pack NuGets
+        run: dotnet pack ${{ env.SOLUTION }} --no-build --configuration Release
+
+      - name: Publish
+        run: dotnet nuget push nugets/**.nupkg -k ${{ secrets.API_KEY }} -s https://api.nuget.org/v3/index.json
+
+      - name: Create github release
+        uses: ncipollo/release-action@v1
+        with:
+          bodyFile: CHANGELOG.md

.github/workflows/test.yml

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+name: Test
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - 'src/**'
+      - 'test/**'
+      - '.github/workflows/**'
+env:
+  SOLUTION: Rougamo.Retry.sln
+jobs:
+  windows:
+    name: Windows
+    runs-on: windows-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v3.0.3
+        with:
+          dotnet-version: |
+            3.1.x
+            5.0.x
+            6.0.x
+            7.0.x
+            8.0.x
+          
+      - name: Restore NuGets
+        run: dotnet restore ${{ env.SOLUTION }}
+
+      - name: Build Solution in DEBUG
+        run: dotnet build --configuration Debug --no-restore ${{ env.SOLUTION }}
+
+      - name: Test in DEBUG
+        run: dotnet test --configuration Debug --no-build ${{ env.SOLUTION }}
+
+      - name: Build Solution in RELEASE
+        run: dotnet build --configuration Release --no-restore ${{ env.SOLUTION }}
+
+      - name: Test in RELEASE
+        run: dotnet test --configuration Release --no-build ${{ env.SOLUTION }}
+
+  linux:
+    name: Linux
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v3.0.3
+        with:
+          dotnet-version: |
+            3.1.x
+            5.0.x
+            6.0.x
+            7.0.x
+            8.0.x
+          
+      - name: Restore NuGets
+        run: dotnet restore ${{ env.SOLUTION }}
+
+      - name: Build Solution in DEBUG
+        run: dotnet build --configuration Debug --no-restore ${{ env.SOLUTION }}
+
+      - name: Test in DEBUG with netcoreapp3.1
+        run: dotnet test --configuration Debug --no-build --framework netcoreapp3.1 ${{ env.SOLUTION }}
+
+      - name: Test in DEBUG with net6.0
+        run: dotnet test --configuration Debug --no-build --framework net6.0 ${{ env.SOLUTION }}
+
+      - name: Test in DEBUG with net8.0
+        run: dotnet test --configuration Debug --no-build --framework net8.0 ${{ env.SOLUTION }}
+
+      - name: Build Solution in RELEASE
+        run: dotnet build --configuration Release --no-restore ${{ env.SOLUTION }}
+
+      - name: Test in RELEASE with netcoreapp3.1
+        run: dotnet test --configuration Release --no-build --framework netcoreapp3.1 ${{ env.SOLUTION }}
+
+      - name: Test in RELEASE with net6.0
+        run: dotnet test --configuration Release --no-build --framework net6.0 ${{ env.SOLUTION }}
+
+      - name: Test in RELEASE with net8.0
+        run: dotnet test --configuration Release --no-build --framework net8.0 ${{ env.SOLUTION }}