Add CliFx support

Akari.Prototype.Server/Akari.Prototype.Server.csproj

@@ -9,6 +9,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="CliFx" Version="2.0.4" />
     <PackageReference Include="Grpc.AspNetCore" Version="2.34.0" />
     <PackageReference Include="Isopoh.Cryptography.Argon2" Version="1.1.10" />
   </ItemGroup>

Akari.Prototype.Server/Cli/Commands/MainCommand.cs

@@ -0,0 +1,19 @@
+using CliFx;
+using CliFx.Attributes;
+using CliFx.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Akari.Prototype.Server.Cli.Commands
+{
+    [Command]
+    public class MainCommand : ICommand
+    {
+        public async ValueTask ExecuteAsync(IConsole console)
+        {
+            await Program.AspMain(Array.Empty<string>());
+        }
+    }
+}

Akari.Prototype.Server/Program.cs

@@ -1,4 +1,5 @@
 using Akari.Prototype.Server.Options;
+using CliFx;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
@@ -15,7 +16,13 @@ namespace Akari.Prototype.Server
 {
     public class Program
     {
-        public static void Main(string[] args)
+        public static async Task<int> Main() =>
+            await new CliApplicationBuilder()
+                .AddCommandsFromThisAssembly()
+                .Build()
+                .RunAsync();
+
+        public static async Task AspMain(string[] args)
         {
             var host = CreateHostBuilder(args).Build();
 
@@ -27,7 +34,7 @@ namespace Akari.Prototype.Server
                 Directory.CreateDirectory(akariOptions.DataPath);
             }
 
-            host.Run();
+            await host.RunAsync();
         }
 
         // Additional configuration is required to successfully run gRPC on macOS.