Add Histogram combiner (#31379)

Co-authored-by: Dilnaz Amanzholova <adilnaz@google.com>

build.gradle.kts

@@ -281,6 +281,7 @@ tasks.register("javaPreCommit") {
   dependsOn(":sdks:java:expansion-service:app:build")
   dependsOn(":sdks:java:extensions:arrow:build")
   dependsOn(":sdks:java:extensions:avro:build")
+  dependsOn(":sdks:java:extensions:combiners:build")
   dependsOn(":sdks:java:extensions:euphoria:build")
   dependsOn(":sdks:java:extensions:google-cloud-platform-core:build")
   dependsOn(":sdks:java:extensions:jackson:build")

sdks/java/extensions/combiners/build.gradle

@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * License); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+plugins { id 'org.apache.beam.module' }
+applyJavaNature(
+        automaticModuleName: 'org.apache.beam.sdk.extensions.combiners',
+        exportJavadoc: false,
+)
+
+description = "Apache Beam :: SDKs :: Java :: Extensions :: Combiners"
+
+dependencies {
+    implementation library.java.vendored_guava_32_1_2_jre
+    implementation library.java.commons_lang3
+    implementation project(path: ":sdks:java:core", configuration: "shadow")
+    testImplementation library.java.junit
+    testRuntimeOnly project(path: ":runners:direct-java", configuration: "shadow")
+}