Further admin api work

extra/admin-api/Utilities/Spacebar.AdminApi.PrepareTestData/Program.cs

@@ -1,8 +1,17 @@
 // See https://aka.ms/new-console-template for more information
 
 using ArcaneLibs;
+using Spacebar.AdminApi.PrepareTestData;
 using Spacebar.AdminApi.PrepareTestData.TestDataTypes;
 
+await Utils.PostFileWithDataAsync("http://localhost:3001/api/v9/channels/1324497120836834414/messages",
+    "eyJhbGciOiJFUzUxMiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjExODM1Njg3NTA5MzEwOTk2NzkiLCJpYXQiOjE3NDQyMTMxNzcsImtpZCI6IjdiMWM5OTBhMWQ1ZWI3MDVjMWFjNmIxOWYwNTVmMTM5Y2FiZDhhOTZmMzg3YTU1NDM3MDRhZDY0OTMyMzViYTMifQ.AUf87OS5DsWLfBR9VVF7emOE8cG8B4JLvktr2WxF9_XQsPd0X8da2s9f9Lq5pTmYe9zOaI7DrHMuggih3uZ9NmZzAfeasEgew4gCBKIcvhxSaKWcU9DMVHgZl-ZH5HnB0yk8l5IKzIV3z6wt9Ght-F_g5SRZiNlpthva0jU2QhRro3IB",
+    new {
+        content = "Hello world",
+        nonce = Random.Shared.NextInt64()
+    },
+    File.ReadAllBytes("/home/Rory/Documents/kuromi_smug.png"), "test.png", "image/png");
+return;
 Console.WriteLine("Hello, World!");
 var tests = ClassCollector<ITestData>.ResolveFromAllAccessibleAssemblies();
 foreach (var test in tests) {
@@ -19,6 +28,7 @@ if (runMethod != null) {
     var task = runMethod.Invoke(testToRun, null) as Task;
     await task!;
     Console.WriteLine($"Test {testToRun.FullName} completed.");
-} else {
+}
+else {
     Console.WriteLine("Test not found.");
 }