Fix `WorkflowCompletedEventV1` by adding a new `output` property

[cdavernas]

Many thanks for submitting your Pull Request :heart:!

What this PR does / why we need it:

• Fixes the WorkflowCompletedEventV1 by adding a new output property
• Fixes all runtimes to set both the runner's NAMESPACE and NAME environment variables
• Fixes all container platforms to name spawned containers after both the runner and their image
• Fixes the ContainerTaskExecutor by removing output truncation when using Kubernetes
• Fixes the KubernetesContainer by fixing the WaitForExit method
• Changed the Nuget package name to Synapse to avoid collision with a package from another company

Closes #396