Add system and member privacy support

PluralKit.API/Startup.cs

@@ -26,6 +26,7 @@ namespace PluralKit.API
 
             services
                 .AddTransient<IDataStore, PostgresDataStore>()
+                .AddSingleton<SchemaService>()
 
                 .AddSingleton(svc => InitUtils.InitMetrics(svc.GetRequiredService<CoreConfig>(), "API"))
 
@@ -41,6 +42,8 @@ namespace PluralKit.API
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
         {
+            SchemaService.Initialize();
+
             if (env.IsDevelopment())
             {
                 app.UseDeveloperExceptionPage();