feat(apiv2): stubs

PluralKit.API/Controllers/v2/SystemControllerV2.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Threading.Tasks;
+
+using Microsoft.AspNetCore.Mvc;
+
+using Newtonsoft.Json.Linq;
+
+using PluralKit.Core;
+
+namespace PluralKit.API
+{
+    [ApiController]
+    [ApiVersion("2.0")]
+    [Route("v{version:apiVersion}/systems")]
+    public class SystemControllerV2: PKControllerBase
+    {
+        public SystemControllerV2(IServiceProvider svc) : base(svc) { }
+
+        [HttpGet("{system}")]
+        public async Task<IActionResult> SystemGet(string system)
+        {
+            return new ObjectResult("Unimplemented")
+            {
+                StatusCode = 501
+            };
+        }
+
+        [HttpPatch("{system}")]
+        public async Task<IActionResult> SystemPatch(string system, [FromBody] JObject data)
+        {
+            return new ObjectResult("Unimplemented")
+            {
+                StatusCode = 501
+            };
+        }
+    }
+}