Auto-run nuget acquisition for SQL and KQL

[sharoncxu]

Is your feature request related to a problem? Please describe.
Users have to run an acquisition string, e.g. #i "nuget: https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-experimental/nuget/v3/index.json" #r "nuget: Microsoft.DotNet.Interactive.SqlServer, 1.0.0-beta.22606.2" to use R and SQL

Describe the solution you'd like
Autorun the nuget acqusition for the user so they don't have to take an extra step

[AbhitejJohn]

We need to figure out if we can fix this after the GA release of Jupyter subkernel support.

[AbhitejJohn]

This is Post-GA work.

[jonsequitur]

This is partially addressed by #3810. I'm going to close it because actually running the NuGet acquisition code on the user's behalf requires a much wider design discussion, but #3810 satisfies the discoverability aspect of the issue.