.NET: chore: support retries on Cosmos storage creation (#402)
* support retries
* tests + registration options
* fix ordering ..
* HK + update packages
* fix paths
* Update dotnet/tests/CosmosDB.IntegrationTests/Microsoft.Extensions.AI.Agents.Runtime.Storage.CosmosDB.Tests/CosmosTestFixture.cs
* re create project and fix some pk usage
* fix all tests
* try workflow?
* wip 1
* fix definition
* try with cosmos_use_emulator env?
* try ignore SSL errors?
* other cert verifications
* hardcode to 8081?
* proper valuation of ENV
* logging
* ensure db exsists for CI
* bump
* cleanup
* fix usage
* nit comment
* try only release for stability?
* try skip some flaky tests
* merge fixes + rollback container
* reimplement with iasyncdisposable pattern
* remove example doc struct
Korolev Dmitry