feat(gh-562): add blobHash data type

Author: bevzzz

src/main/java/io/weaviate/client6/v1/api/collections/DataType.java

@@ -14,6 +14,7 @@ public interface DataType {
   public static final String BOOL = "boolean";
   public static final String BOOL_ARRAY = "boolean[]";
   public static final String BLOB = "blob";
+  public static final String BLOB_HASH = "blobHash";
   public static final String DATE = "date";
   public static final String DATE_ARRAY = "date[]";
   public static final String UUID = "uuid";

src/main/java/io/weaviate/client6/v1/api/collections/Property.java

@@ -118,6 +118,25 @@ public static Property blob(String name, Function<Builder, ObjectBuilder<Propert
     return newProperty(name, DataType.BLOB, fn);
   }
 
+  /**
+   * Create a {@code blobHash} property.
+   *
+   * @param name Property name.
+   */
+  public static Property blobHash(String name) {
+    return blobHash(name, ObjectBuilder.identity());
+  }
+
+  /**
+   * Create a {@code blobHash} property with additional configuration.
+   *
+   * @param name Property name.
+   * @param fn   Lambda expression for optional parameters.
+   */
+  public static Property blobHash(String name, Function<Builder, ObjectBuilder<Property>> fn) {
+    return newProperty(name, DataType.BLOB_HASH, fn);
+  }
+
   /**
    * Create a {@code bool} property.
    *