[Misc] Improve name/descriptiors + add missing EM metadata

xwiki-platform-core/xwiki-platform-model/xwiki-platform-model-validation/xwiki-platform-model-validation-default/pom.xml

@@ -31,6 +31,10 @@
   <packaging>jar</packaging>
   <properties>
     <xwiki.jacoco.instructionRatio>0.74</xwiki.jacoco.instructionRatio>
+    <!-- Name to display by the Extension Manager -->
+    <xwiki.extension.name>Model Validation Strategies</xwiki.extension.name>
+    <!-- Category to display by the Extension Manager -->
+    <xwiki.extension.category>jar</xwiki.extension.category>
     </properties>
   <dependencies>
     <dependency>