GH-45752: [C#] Update FlightInfo.cs with missing fields (#45753)

### What changes are included in this PR?

add ordered and AppMetaData to FlightInfo.cs [#45752](#45752)

### Are these changes tested?

YES

### Are there any user-facing changes?

NO
* GitHub Issue: #45752

Lead-authored-by: Christoph <[email protected]>
Co-authored-by: Christoph Mettler <[email protected]>
Signed-off-by: Curt Hagenlocher <[email protected]>

Author: cmettler

csharp/src/Apache.Arrow.Flight/FlightInfo.cs

@@ -38,15 +38,22 @@ internal FlightInfo(Protocol.FlightInfo flightInfo)
 
             TotalBytes = flightInfo.TotalBytes;
             TotalRecords = flightInfo.TotalRecords;
+            Ordered = flightInfo.Ordered;
+            AppMetadata = flightInfo.AppMetadata;
+        }
+        public FlightInfo(Schema schema, FlightDescriptor descriptor, IReadOnlyList<FlightEndpoint> endpoints, long totalRecords = -1, long totalBytes = -1):this(schema,descriptor,endpoints,totalRecords,totalBytes,false, ByteString.Empty)
+        {
         }
 
-        public FlightInfo(Schema schema, FlightDescriptor descriptor, IReadOnlyList<FlightEndpoint> endpoints, long totalRecords = -1, long totalBytes = -1)
+        public FlightInfo(Schema schema, FlightDescriptor descriptor, IReadOnlyList<FlightEndpoint> endpoints, long totalRecords, long totalBytes, bool ordered = false, ByteString appMetadata=null)
         {
             Schema = schema;
             Descriptor = descriptor;
             Endpoints = endpoints;
             TotalBytes = totalBytes;
             TotalRecords = totalRecords;
+            Ordered = ordered;
+            AppMetadata = appMetadata ?? ByteString.Empty;
         }
 
         public FlightDescriptor Descriptor { get; }
@@ -57,20 +64,27 @@ public FlightInfo(Schema schema, FlightDescriptor descriptor, IReadOnlyList<Flig
 
         public long TotalRecords { get; }
 
+        public bool Ordered { get; }
+
+        public ByteString AppMetadata { get; }
+
         public IReadOnlyList<FlightEndpoint> Endpoints { get; }
 
         internal Protocol.FlightInfo ToProtocol()
         {
             var serializedSchema = Schema != null ? SchemaWriter.SerializeSchema(Schema) : ByteString.Empty;
+
             var response = new Protocol.FlightInfo()
             {
                 Schema = serializedSchema,
                 FlightDescriptor = Descriptor.ToProtocol(),
                 TotalBytes = TotalBytes,
-                TotalRecords = TotalRecords
+                TotalRecords = TotalRecords,
+                Ordered = Ordered,
+                AppMetadata = AppMetadata 
             };
 
-            foreach(var endpoint in Endpoints)
+            foreach (var endpoint in Endpoints)
             {
                 response.Endpoint.Add(endpoint.ToProtocol());
             }

csharp/test/Apache.Arrow.Flight.Tests/FlightInfoComparer.cs

@@ -34,6 +34,11 @@ public static void Compare(FlightInfo expected, FlightInfo actual)
             Assert.Equal(expected.TotalBytes, actual.TotalBytes);
 
             Assert.Equal(expected.TotalRecords, actual.TotalRecords);
+
+            Assert.Equal(expected.Ordered, actual.Ordered);
+
+            Assert.Equal(expected.AppMetadata, actual.AppMetadata);
+            
         }
     }
 }