Add PMD ruleset configuration for custom code analysis

This commit introduces a new `ruleset.xml` file for PMD, specifying custom rules and exclusions tailored for Magento's codebase. It ensures consistency in code quality by excluding irrelevant checks and focusing on important patterns. This configuration is critical for integrating automated code analysis into the project.

Author: VitaliyBoyko

gradle-tasks/pmd/ruleset.xml

@@ -0,0 +1,45 @@
+<?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<ruleset name="Custom Rules"
+         xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 https://pmd.sourceforge.io/ruleset_2_0_0.xsd">
+
+    <description>
+        Magento PhpStorm rules
+    </description>
+    <rule ref="category/java/bestpractices.xml">
+        <exclude name="JUnit4TestShouldUseTestAnnotation"/>
+        <exclude name="JUnit4TestShouldUseBeforeAnnotation"/>
+    </rule>
+    <rule ref="category/java/codestyle.xml">
+        <exclude name="AtLeastOneConstructor" />
+        <exclude name="LongVariable" />
+        <exclude name="OnlyOneReturn" />
+    </rule>
+    <rule ref="category/java/design.xml">
+        <exclude name="LawOfDemeter"/>
+        <exclude name="DataClass"/>
+    </rule>
+    <rule ref="category/java/documentation.xml">
+        <exclude name="CommentRequired" />
+        <exclude name="CommentSize" />
+    </rule>
+    <rule ref="category/java/errorprone.xml">
+        <exclude name="BeanMembersShouldSerialize"/>
+        <exclude name="DataflowAnomalyAnalysis"/>
+        <exclude name="MissingSerialVersionUID"/>
+    </rule>
+    <exclude-pattern>.*/resources/.*</exclude-pattern>
+    <exclude-pattern>.*/testData/.*</exclude-pattern>
+    <rule ref="category/java/multithreading.xml">
+        <exclude name="UseConcurrentHashMap" />
+    </rule>
+    <rule ref="category/java/performance.xml"/>
+    <rule ref="category/java/security.xml" />
+</ruleset>