Create Nethereum metapackage (#4)

* GitHubCI: add metapackage push

Following:
https://danielwertheim.se/how-to-create-a-nuget-metapackage/

Co-authored-by: Mehrshad <[email protected]>

* GithubCI: use nugetPreRelease.fsx to get version

* GithubCI: publish package on nuget

* GithubCI: add conditions for "Push" step

Check for presence of secrets.NUGET_API_KEY is made in script
itself, because Github actions don't have access to secrets
context in if statements (see [1]).

[1] https://docs.github.com/en/actions/learn-github-actions/contexts#context-availability

.github/workflows/dotnet.yml

@@ -22,3 +22,57 @@ jobs:
       run: |
         cd src
         & ".\nugetDevBuild.bat"
+
+  push:
+    needs: build
+    runs-on: ubuntu-22.04
+    env:
+      BASE_VERSION: 4.20.0
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v3
+      with:
+        dotnet-version: 8.0.x
+
+    - name: Add dependencies
+      run: |
+        dotnet new classlib --name Nethereum --framework netstandard2.0
+        cd Nethereum
+        dotnet add package --version ${{env.BASE_VERSION}} Nethereum.ABI
+        dotnet add package --version ${{env.BASE_VERSION}} Nethereum.Accounts
+        dotnet add package --version ${{env.BASE_VERSION}} Nethereum.Contracts
+        dotnet add package --version ${{env.BASE_VERSION}} Nethereum.Hex
+        dotnet add package --version ${{env.BASE_VERSION}} Nethereum.KeyStore
+        dotnet add package --version ${{env.BASE_VERSION}} Nethereum.RLP
+        dotnet add package --version ${{env.BASE_VERSION}} Nethereum.RPC
+        dotnet add package --version ${{env.BASE_VERSION}} Nethereum.Signer
+        dotnet add package --version ${{env.BASE_VERSION}} Nethereum.StandardTokenEIP20
+        dotnet add package --version ${{env.BASE_VERSION}} Nethereum.Util
+        dotnet add package --version ${{env.BASE_VERSION}} Nethereum.Web3
+        rm Class1.cs
+
+    - name: Pack
+      run: |
+        cd Nethereum
+
+        VERSION="$(dotnet fsi ../nugetPreRelease.fsx $BASE_VERSION)"
+
+        dotnet pack \
+          --configuration Release \
+          --output ../dist \
+          --property:IncludeBuildOutput=false \
+          --property:IncludeContentInPack=false \
+          --property:TargetFrameworks=netstandard2.0 \
+          --property:Version=$VERSION
+    
+    - name: Push
+      if: github.event_name == 'push' && github.ref == 'refs/heads/upstream'
+      run: |
+        cd dist
+        if [ -n "${{secrets.NUGET_API_KEY}}" ]; then
+          dotnet nuget push *.nupkg --api-key ${{secrets.NUGET_API_KEY}} --source https://api.nuget.org/v3/index.json
+        fi

nugetPreRelease.fsx

@@ -0,0 +1,6 @@
+#r "nuget: Fsdk, Version=0.6.0--date20231213-0703.git-d7a5962"
+
+let args = fsi.CommandLineArgs
+
+Fsdk.Network.GetNugetPrereleaseVersionFromBaseVersion args.[1]
+|> System.Console.WriteLine