feat(backend): initial /api/v1/users endpoint

Foxnouns.Backend/Controllers/V1/UsersV1Controller.cs

@@ -0,0 +1,16 @@
+using Foxnouns.Backend.Database.Models;
+using Foxnouns.Backend.Services.V1;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Foxnouns.Backend.Controllers.V1;
+
+[Route("/api/v1/users")]
+public class UsersV1Controller(UsersV1Service usersV1Service) : ApiControllerBase
+{
+    [HttpGet("{userRef}")]
+    public async Task<IActionResult> GetUserAsync(string userRef, CancellationToken ct = default)
+    {
+        User user = await usersV1Service.ResolveUserAsync(userRef, CurrentToken, ct);
+        return Ok(await usersV1Service.RenderUserAsync(user));
+    }
+}