Activity tag support

[YunchuWang]

This pull request introduces several enhancements and new features to improve the functionality and flexibility of the Durable Task framework. The most significant changes include the addition of tagging support for tasks, the creation of a new activity class for cache clearing, and updates to orchestrator logic to utilize the new activity. Below is a breakdown of the changes:

Related prs:
https://github.com/microsoft/durabletask-protobuf/pull/43/files
https://github.com/Azure/durabletask/pull/1211/files
https://msazure.visualstudio.com/One/_git/AAPT-DTMB/pullrequest/12388270

Task Tagging Support

• Added a Tags property to the TaskOptions class, enabling tasks to have associated metadata tags. This includes a new constructor for initializing TaskOptions with tags. (src/Abstractions/TaskOptions.cs, src/Abstractions/TaskOptions.csR22-R42)
• Introduced a CallActivityOptions class, inheriting from TaskOptions, specifically for configuring activity calls with tags. (src/Abstractions/TaskOptions.cs, src/Abstractions/TaskOptions.csR128-R153)
• Updated ProtoUtils to handle tags during task scheduling and history event conversion, ensuring tags are serialized and deserialized properly. (src/Shared/Grpc/ProtoUtils.cs, [1] [2]
• Modified TaskOrchestrationContextWrapper to pass tags when scheduling tasks, ensuring they are included in the orchestration execution. (src/Worker/Core/Shims/TaskOrchestrationContextWrapper.cs, src/Worker/Core/Shims/TaskOrchestrationContextWrapper.csR141-R170)

New Cache Clearing Activity

• Added a new CacheClearingActivity class, which simulates cache clearing and can be invoked as part of an orchestration. (samples/ScheduleWebApp/Activities/CacheClearingActivity.cs, samples/ScheduleWebApp/Activities/CacheClearingActivity.csR1-R17)
• Updated the CacheClearingOrchestrator to call the new CacheClearingActivity using CallActivityAsync with tagging options. (samples/ScheduleWebApp/Orchestrations/CacheClearingOrchestrator.cs, samples/ScheduleWebApp/Orchestrations/CacheClearingOrchestrator.csL17-R23)

Integration with Sample Application

• Registered the CacheClearingActivity and updated the Durable Task worker configuration in the sample application to include the new activity. (samples/ScheduleWebApp/Program.cs, samples/ScheduleWebApp/Program.csR23-L28)
• Added necessary using directives for the new activity in the orchestrator and program files. (samples/ScheduleWebApp/Orchestrations/CacheClearingOrchestrator.cs, [1]; samples/ScheduleWebApp/Program.cs, [2]

Dependency Updates

• Upgraded the Microsoft.Azure.DurableTask.Core package from version 3.1.0 to 3.1.1 to ensure compatibility with the new features. (Directory.Packages.props, Directory.Packages.propsL31-R31)

Code Cleanup

• Removed an unused using directive from ProtoUtils.cs to improve code clarity. (src/Shared/Grpc/ProtoUtils.cs, src/Shared/Grpc/ProtoUtils.csL7)

[cgillum]

I think we need to revisit the public API change. In particular, I don't think we should limit tags to activity calls.