Add API listen port configuration

PluralKit.API/ApiConfig.cs

@@ -0,0 +1,7 @@
+namespace PluralKit.API
+{
+    public class ApiConfig
+    {
+        public int Port { get; set; } = 5000;
+    }
+}

PluralKit.API/PluralKit.API.csproj

@@ -25,6 +25,7 @@
       <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="3.1.0" />
       <PackageReference Include="Microsoft.AspNetCore.Mvc.Versioning" Version="4.1.1" />
       <PackageReference Include="Microsoft.AspNetCore.Mvc.Versioning.ApiExplorer" Version="4.1.1" />
+      <PackageReference Include="Serilog.AspNetCore" Version="3.4.0" />
       <PackageReference Include="Swashbuckle.AspNetCore.Annotations" Version="5.4.1" />
       <PackageReference Include="Swashbuckle.AspNetCore.Filters" Version="5.1.1" />
       <PackageReference Include="Swashbuckle.AspNetCore.Newtonsoft" Version="5.4.1" />

PluralKit.API/Program.cs

@@ -1,6 +1,7 @@
 using Autofac.Extensions.DependencyInjection;
 
 using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 
 using PluralKit.Core;
@@ -21,7 +22,10 @@ namespace PluralKit.API
                 .ConfigureWebHostDefaults(whb => whb
 
                     .UseConfiguration(InitUtils.BuildConfiguration(args).Build())
-                    .ConfigureKestrel(opts => { opts.ListenAnyIP(5000); })
+                    .ConfigureKestrel(opts =>
+                    {
+                        opts.ListenAnyIP(opts.ApplicationServices.GetRequiredService<ApiConfig>().Port);
+                    })
                     .UseStartup<Startup>());
     }
 }

PluralKit.API/Startup.cs

@@ -91,7 +91,7 @@ namespace PluralKit.API
         {
             builder.RegisterInstance(InitUtils.BuildConfiguration(Environment.GetCommandLineArgs()).Build())
                 .As<IConfiguration>();
-            builder.RegisterModule(new ConfigModule<object>());
+            builder.RegisterModule(new ConfigModule<ApiConfig>("API"));
             builder.RegisterModule(new LoggingModule("api"));
             builder.RegisterModule(new MetricsModule("API"));
             builder.RegisterModule<DataStoreModule>();