Install command noop check if package is already installed and log that in the message

As noted by the todo comment https://github.com/chocolatey/choco/blob/d8ca7bad2ad64538a0c1026a9317700dbb7f03db/src/chocolatey/infrastructure.app/services/NugetService.cs#L359

Start at src/chocolatey/infrastructure.app/services/NugetService.cs near line 359 and inspect the TODO comment and surrounding install flow. Determine how an already-installed package is detected and where the install message is logged; done means the install command performs a no-op and clearly logs that condition.

Written by the indexing model from the issue text.