Support locals command in dotnet cli

Title

Adding locals command to dotnet cli.

Problem

Currently we do not have a cross platform implementation of nuget locals command.

Who is the customer?

nuget cli users who currently do not have a way to clear nuget cache using dotnet cli.

Evidence

??

Solution

Add a dotnet locals command to the dotnet cli. I am currently looking into what behavior will be supported. For now assuming that all the behavior stays the same as before. I will update this doc as I investigate further.

Usage

dotnet nuget locals [options]

Locals Command Options -

Clear	Clear the resources in the specified cache location
List	List the selected local resources or cache locations
Help	help
Verbosity	Display the amount of details in the output: normal, quiet, detailed.

Example

dotnet nuget locals <all | http-cache | packages-cache | global-packages> -clear