Maint/pmd update rules (#248)

* 🔧 pmd exclude rules for many imports

* 🔧 pmd exclude rules for param count gt 3

* 🔧 pmd revert exclude some design rules

refarch-tools/refarch-pmd/src/main/resources/refarch-pmd-ruleset.xml

@@ -16,6 +16,7 @@
         <exclude name="LongVariable"/>
         <exclude name="OnlyOneReturn"/>
         <exclude name="ShortVariable"/>
+        <exclude name="TooManyStaticImports"/>
     </rule>
     <rule ref="category/java/design.xml">
         <exclude name="AvoidCatchingGenericException"/>