Improve code formatting settings Part 2

[ds-psosnowski]

First part of a story has covered preparation for code formatting settings including plugin configuration to support auto-format code to match google standard. https://github.com/eclipse-tractusx/item-relationship-service/issues/319

Second part of a story is to format old code base to match current format and change config of maven-checkstyle-plugin to match new format. After code is formatted this should be changed in checkstyle.xml file:

<module name="Indentation">
            <property name="basicOffset" value="2"/>
            <property name="braceAdjustment" value="0"/>
            <property name="caseIndent" value="2"/>
            <property name="throwsIndent" value="2"/>
            <property name="lineWrappingIndentation" value="2"/>
            <property name="arrayInitIndent" value="2"/>
        </module>

After this change maven build will fail on validate goal if code does not follow google standard. Also update from @dsmf - please also update PMD rule to match max length of a comment size:

Acceptance Criteria

• Old code is formatted to match google java code standard
• checkstyle.xml is adapted to new format so any violation of it's rules will result in failed build
• update pmd rules to match new code formatting settings

[dsmf]

PMD comment maxLineLength was already set to 120 in https://github.com/catenax-ng/tx-item-relationship-service/commit/d87d6aa04ed255c4ac30cec56c56db4407e87073