feat: add PATCH request support, expand PATCH /users/@me, serialize enums correctly

Foxnouns.Backend/Utils/ScreamingSnakeCaseEnumConverter.cs

@@ -0,0 +1,18 @@
+using System.Globalization;
+using Newtonsoft.Json.Converters;
+using Newtonsoft.Json.Serialization;
+
+namespace Foxnouns.Backend.Utils;
+
+/// <summary>
+/// A custom StringEnumConverter that converts enum members to SCREAMING_SNAKE_CASE, rather than CamelCase as is the default.
+/// Newtonsoft.Json doesn't provide a screaming snake case naming strategy, so we just wrap the normal snake case one and convert it to uppercase.
+/// </summary>
+public class ScreamingSnakeCaseEnumConverter() : StringEnumConverter(new ScreamingSnakeCaseNamingStrategy(), false)
+{
+    private class ScreamingSnakeCaseNamingStrategy : SnakeCaseNamingStrategy
+    {
+        protected override string ResolvePropertyName(string name) =>
+            base.ResolvePropertyName(name).ToUpper(CultureInfo.InvariantCulture);
+    }
+}