Augment performance scenarios for minimal APIs

In .NET 6, we added some basic test scenarios for minimal APIs around returning plaintext responses and JSON-based responses.

In .NET 7, we introduced newer scenarios to asses the impact of route handler filters.

This issue captures improving our current set of scenarios and adding new ones to reflect key scenarios.

https://github.com/aspnet/Benchmarks/blob/main/src/BenchmarksApps/MapAction/Program.cs