Add reflect-config.json to s3-transfer-manager (#5184)

Author: klopfdreh

.changes/next-release/bugfix-s3transfermanager-8ed72b5.json

@@ -0,0 +1,6 @@
+{
+    "type": "bugfix",
+    "category": "s3-transfer-manager",
+    "contributor": "klopfdreh",
+    "description": "Added reflect-config.json for ApplyUserAgentInterceptor in s3-transfer-manager for native builds"
+}

services-custom/s3-transfer-manager/src/main/resources/META-INF/native-image/software/amazon/awssdk/s3-transfer-manager/reflect-config.json

@@ -0,0 +1,11 @@
+[
+  {
+    "name": "software.amazon.awssdk.transfer.s3.internal.ApplyUserAgentInterceptor",
+    "methods": [
+      {
+        "name": "<init>",
+        "parameterTypes": []
+      }
+    ]
+  }
+]