[refactor] Update package-name and abbrev to match eXist-db conventions

- package-name: http://exist-db.org/pkg/http-client
- package-abbrev: exist-http-client

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: joewiz

pom.xml

@@ -45,8 +45,8 @@
         <exist.version>7.0.0-SNAPSHOT</exist.version>
 
         <!-- used in the EXPath Package Descriptor -->
-        <package-name>http://exist-db.org/apps/http-client</package-name>
-        <package-abbrev>http-client</package-abbrev>
+        <package-name>http://exist-db.org/pkg/http-client</package-name>
+        <package-abbrev>exist-http-client</package-abbrev>
 
         <http-client.module.namespace>http://expath.org/ns/http-client</http-client.module.namespace>
         <http-client.module.java.classname>org.exist.xquery.modules.httpclient.HttpClientModule</http-client.module.java.classname>