Ready: timer sample was failing on running worker

[GSmithApps]

Fixing Timer Example

The timer example was failing when I ran dotnet run worker, so I just made small changes to get it running.

The error

$ dotnet run worker

/Users/grantsmith/forks/samples-dotnet/src/Timer/Subscription.workflow.cs(24,35): error CS0103: The name 'TemporalException' does not exist in the current context [/Users/grantsmith/forks/samples-dotnet/src/Timer/TemporalioSamples.Timer.csproj]
/Users/grantsmith/forks/samples-dotnet/src/Timer/MyActivities.cs(5,14): error CA1052: Type 'MyActivities' is a static holder type but is neither static nor NotInheritable (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1052) [/Users/grantsmith/forks/samples-dotnet/src/Timer/TemporalioSamples.Timer.csproj]

The build failed. Fix the build errors and run again.

The Fix

I just suppressed the message and added the exceptions import

[cretz]

Thanks! All looks good IMO.