[Epic]: Orleans Enhancements for .NET7

[rafikiassumani-msft]

Grains

• Implement POCO Grains #7468 - Replaced by #Implement POCO Grains #7351
• Implement Stateless Service Abstractions #7469
• Implement runtime grain migrations between machines #7470

Persistence

• Configurable serializers for grain persistence #7471
• Experiment with grain facets to allow flexibility for different states per grain and multiple storage providers #7472

Streaming

• Simplify stream configuration abstractions #7473
• Make PubSub storage pluggable #7474
• Remove SMS Provider #7475

Hosting/Deployment

• [Epic]: Support Multi-clustering for Orleans #7485
• Improve experience for Orleans customers deploying to Azure #7486
  • Creating deployment docs

Reminders & Timers

• Extract reminders from the core into a separate library #7476
• [Epic]: Improve scalability and make reminders general purpose to allows users to specify context #7477
  - Needs system design
• Implement the ability to schedule non re-entrance timers #7478

Workflows

• [Epic]: Implement workflows as a primitive in Orleans #7487
  • Work with Azure Durable functions
  • Needs design and user studies

Tooling

• Add Orleans template for aspnetcore #7479

Modernization/Continuous improvements

• Migrate internal stats to .NET Counters #7480
  • Turn-key support for the major Azure hosting platforms (App Service, Azure Container Apps, Azure Kubernetes Service)
  • Support for open telemetry
• Align Orleans build systems with aspnetcore and other .NET core repos #7482
• Modernization of perf tests using Crank, reliability, setup BO reports  #7483
• Refactor streams pulling agents #7481

Docs

• Create new docs following a problem solution approach #7484

[jirisykora83]

@SebastianStehle https://support.squidex.io/t/feedback-needed-the-future-or-orleans/4338/3