Add new template for "dotnet new benchmark"

[adamsitnik]

I think that we should add a new template for dotnet cli that would create following app when used:

using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;

namespace BenchmarkApp
{
    class Program
    {
        static void Main(string[] args) => BenchmarkSwitcher.FromAssembly(typeof(Program).Assembly).Run(args);
    }

    public class TypeWithBenchmarks
    {
        [Benchmark]
        public int YourBenchmark()
        {
            // implement your benchmark here
            return 0;
        }
    }
}

@AndreyAkinshin what do you think?

[AndreyAkinshin]

@adamsitnik I like this idea!

[adamsitnik]

btw the .csproj should be:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>$whatUserHasAskedFor</TargetFramework>
    <OutputType>Exe</OutputType>
    <PlatformTarget>AnyCPU</PlatformTarget>
    <DebugType>pdbonly</DebugType>
    <DebugSymbols>true</DebugSymbols>
    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
    <Optimize>true</Optimize>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="BenchmarkDotNet" Version="0.1*" />
    <PackageReference Include="BenchmarkDotNet.Diagnostics.Windows" Version="0.1*" />
  </ItemGroup>

</Project>

[CodeTherapist]

I would like to do this :)

[adamsitnik]

@CodeTherapist awesome! please let me know if you need anything

[dzmitry-lahoda]

Would it be possible to have template for F# and with more code (i.e. template with examples) like next TheAngryByrd/BenchmarkDotNet.Template#3 ?

[TheAngryByrd]

I'd be happy to just port the code I have in that repo to something under here as it will get more love and attention.

[JamieKeeling]

I've written a template or two before and would love to help.

Before I get started could you provide some basic information?

1. Where would you prefer the template content to be stored within the repository? Alternatively would a separate repository be better and ownership transferred.
2. Templating supports file system or Nuget installation. File system is a low bar of entry but Nuget is ultimately more flexible and easier for consumers albeit requires CI/CD to build the package. What's your preference?

[Kavignon]

How can I be of help here?

[AndreyAkinshin]

@Kavignon we already have a pull request by @CodeTherapist with basic template support: #1044 However, I raised some concerns about the current PR status: #1044 (review) . I think it will be better to continue discussion there and finish the PR.
@CodeTherapist do you need any help with the PR?