add caching headers

Femto.Api/Controllers/Media/MediaController.cs

@@ -31,13 +31,18 @@ public class MediaController(IMediaModule mediaModule) : ControllerBase
     }
 
     [HttpGet("{id}")]
-    [Authorize]
     public async Task GetMedia(Guid id, CancellationToken cancellationToken)
     {
         var res = await mediaModule.PostQuery(new LoadFileQuery(id), cancellationToken);
 
+        // Set cache headers
+        HttpContext.Response.Headers.CacheControl = "public,max-age=31536000"; // Cache for 1 year
+        HttpContext.Response.Headers.Expires = DateTime.UtcNow.AddYears(1).ToString("R");
+    
+        // If you want to support cache validation
+        HttpContext.Response.Headers.ETag = $"\"{id}\""; // Using the file ID as ETag
+    
         HttpContext.Response.ContentType = res.Type;
         HttpContext.Response.ContentLength = res.Size;
         await res.Data.CopyToAsync(HttpContext.Response.Body, cancellationToken);
-    }
-}
+    }}