Add placement configuration to key-value and object store (#650)

* Add placement configuration to key-value store

* Add placement configuration to object store

src/NATS.Client.KeyValueStore/NatsKVConfig.cs

@@ -58,6 +58,11 @@ public record NatsKVConfig
     /// </summary>
     public NatsKVRepublish? Republish { get; init; }
 
+    /// <summary>
+    /// Placement requirements for a key-value store stream.
+    /// </summary>
+    public Placement? Placement { get; init; }
+
     /// <summary>
     /// Use compressed storage.
     /// </summary>

src/NATS.Client.KeyValueStore/NatsKVContext.cs

@@ -223,6 +223,7 @@ private static StreamConfig CreateStreamConfig(NatsKVConfig config)
             Compression = config.Compression ? StreamConfigCompression.S2 : StreamConfigCompression.None,
             Storage = storage,
             Republish = republish!,
+            Placement = config.Placement,
             AllowRollupHdrs = true,
             DenyDelete = true,
             DenyPurge = false,

src/NATS.Client.ObjectStore/NatsObjConfig.cs

@@ -1,3 +1,5 @@
+using NATS.Client.JetStream.Models;
+
 namespace NATS.Client.ObjectStore;
 
 /// <summary>
@@ -40,6 +42,11 @@ public record NatsObjConfig(string Bucket)
     /// </summary>
     public int NumberOfReplicas { get; init; } = 1;
 
+    /// <summary>
+    /// Placement requirements for a object store stream.
+    /// </summary>
+    public Placement? Placement { get; init; }
+
     /// <summary>
     /// Additional metadata for the bucket.
     /// </summary>

src/NATS.Client.ObjectStore/NatsObjContext.cs

@@ -43,7 +43,7 @@ public async ValueTask<INatsObjStore> CreateObjectStoreAsync(NatsObjConfig confi
             MaxBytes = config.MaxBytes ?? -1,
             Storage = storage,
             NumReplicas = config.NumberOfReplicas,
-            /* TODO: Placement = */
+            Placement = config.Placement,
             Discard = StreamConfigDiscard.New,
             AllowRollupHdrs = true,
             AllowDirect = true,