[Placement Group]Add strict spread strategy (#10174)

* support STRICT_SPREAD strategy

* fix review comments

* rebase master

* fix lint error

* fix lint error

Co-authored-by: 灵洵 <fengbin.ffb@antfin.com>

java/api/src/main/java/io/ray/api/placementgroup/PlacementStrategy.java

@@ -8,14 +8,22 @@ public enum PlacementStrategy {
    * Packs Bundles close together inside nodes as tight as possible.
    */
   PACK(0),
+
   /**
    * Places Bundles across distinct nodes as even as possible.
    */
   SPREAD(1),
+
   /**
    * Packs Bundles into one node. The group is not allowed to span multiple nodes.
    */
-  STRICT_PACK(2);
+  STRICT_PACK(2),
+
+  /**
+   * Places Bundles across distinct nodes.
+   * The group is not allowed to deploy more than one bundle on a node.
+   */
+  STRICT_SPREAD(3);
 
   private int value = 0;