[github actions] Publish (pre)release on 'v*' tag push

.github/workflows/prerelease.yml

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+name: Tagged Pre-Release
+
+on:
+  push:
+    tags:
+      - "v[0-9]+.[0-9]+.[0-9]+-*"
+
+jobs:
+  tagged-prerelease:
+    name: "Tagged Pre-Release"
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 6.0.x
+    - name: Add NuGet source
+      run: dotnet nuget add source --username oliverbooth --password ${{ secrets.GITHUB_TOKEN }} --store-password-in-clear-text --name github "https://nuget.pkg.github.com/oliverbooth/index.json"
+    - name: Restore dependencies
+      run: dotnet restore
+    - name: Publish
+      run: dotnet publish -c Release -r linux-x64 --self-contained true
+    - name: Publish Release
+      uses: "marvinpinto/action-automatic-releases@latest"
+      with:
+        repo_token: "${{ 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:
+  tagged-release:
+    name: "Tagged Release"
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 6.0.x
+    - name: Add NuGet source
+      run: dotnet nuget add source --username oliverbooth --password ${{ secrets.GITHUB_TOKEN }} --store-password-in-clear-text --name github "https://nuget.pkg.github.com/oliverbooth/index.json"
+    - name: Restore dependencies
+      run: dotnet restore
+    - name: Publish
+      run: dotnet publish -c Release -r linux-x64 --self-contained true
+    - name: Publish Release
+      uses: "marvinpinto/action-automatic-releases@latest"
+      with:
+        repo_token: "${{ secrets.GITHUB_TOKEN }}"
+        prerelease: false