chore: Add wrapper module for Google Cloud modules

[digital88]

What does this PR do?

Wrapper for GCloud modules as per #1372 (comment)

Why is it important?

Will resolve #1372

How to test this PR

• Build and pack:

dotnet pack src/Testcontainers
dotnet pack src/Testcontainers.BigQuery
dotnet pack src/Testcontainers.Bigtable
dotnet pack src/Testcontainers.Firestore
dotnet pack src/Testcontainers.PubSub
dotnet pack src/Testcontainers.GCloud

• Create new test xunit project:

mkdir test-gcloud-package
cd test-gcloud-package
dotnet new xunit -n TestProject

• Add empty nugetconfig:

dotnet new nugetconfig

• Add this content to nugetconfig:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <packageSources>
    <!--To inherit the global NuGet package sources remove the <clear/> line below -->
    <clear />
<!--Change value attribute to point to Testcontainers.GCloud/bin/Release directory -->
    <add key="local0" value="../../testcontainers-dotnet/src/Testcontainers/bin/Release" />
    <add key="local1" value="../../testcontainers-dotnet/src/Testcontainers.GCloud/bin/Release" />
    <add key="local2" value="../../testcontainers-dotnet/src/Testcontainers.BigQuery/bin/Release" />
    <add key="local3" value="../../testcontainers-dotnet/src/Testcontainers.Bigtable/bin/Release" />
    <add key="local4" value="../../testcontainers-dotnet/src/Testcontainers.Firestore/bin/Release" />
    <add key="local5" value="../../testcontainers-dotnet/src/Testcontainers.PubSub/bin/Release" />
    <add key="nuget" value="https://api.nuget.org/v3/index.json" />
  </packageSources>
</configuration>

• Restore project and put packages to local folder:

dotnet restore -f --no-cache --packages ./local-nuget-packages

• Look into ./local-nuget-packages directory

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[HofmeisterAn]

This VersionOverride allows me to build and pack and test locally. The version variable in Directory.Build.props is already 4.4.0, but Nuget has v4.3.0 modules published - previous value of $(Version).

Simply use project references as we already do:

testcontainers-dotnet/src/Testcontainers.EventHubs/Testcontainers.EventHubs.csproj

Line 11 in 8470afd

<ProjectReference Include="../Testcontainers.Azurite/Testcontainers.Azurite.csproj"/>

This ensures that the package references the correct version and is published in the proper order.

[digital88]

Fixed csproj and edited OP

[HofmeisterAn]

Thanks