Adds Milvus to the Aspire hosting/component packages

[timheuer]

Adds the Milvus vector database to Aspire.

• [x] Hosting component using container standalone
• [x] Client component using C# Milvus.Client
• [x] Hosting/Component initial tests
• [x] Added playground app (use api.http to run the steps) - uses code samples from C# SDK
• [x] Adds the Attu web admin experience (excluded from publish manifest)

Requires that a parameter exists for the root auth api key No healthchecks/tracing/metrics available in the C# Milvus.Client

https://github.com/dotnet/aspire/assets/4821/b763b107-b216-4202-965d-5d9dc8997b3f

/cc @roji @luisquintanilla

Microsoft Reviewers: Open in CodeFlow