Public Preview: New major version of durable Functions extension

Durable Functions extension v3.0.0 is now in public preview. This new major version introduced two key changes: upgrade to the latest Azure Storage SDK and a new partition manager. This SDK upgrade provides the latest performance, correctness, and security updates. However, it may be a breaking change for some .NET in-process users. The new partition manager helps to reduce idle-state costs significantly for those using Azure Storage backend, especially v2 Storage accounts. In a benchmark, daily cost reduction is 93%. The new partition manager uses Azure Tables to manage partition assignments instead of Azure Blob leases, and in addition to being more cost efficient, it is also easier to debug. For more info: see blog post [Preview of Durable Functions Extension v3.0.0 - Microsoft Community Hub](https://techcommunity.microsoft.com/t5/apps-on-azure-blog/preview-of-durable-functions-extension-v3-0-0/ba-p/4000452) * Features