feat: ensure 1 line space before/after properties & zero on the first one

Author: gsdevme

Markup/ruleset.xml

@@ -31,6 +31,13 @@
             <property name="eolChar" value="\n"/>
         </properties>
     </rule>
+    
+    <rule ref="Squiz.WhiteSpace.MemberVarSpacing">
+        <properties>
+            <property name="spacing" value="1" />
+            <property name="spacingBeforeFirst" value="0" />
+        </properties>
+    </rule>
 
     <!-- Remove unused use statements -->
     <rule ref="vendor/slevomat/coding-standard/SlevomatCodingStandard/Sniffs/Namespaces/UnusedUsesSniff.php">