[refactor] Change default prefix to exrequest, package-abbrev to exist-request

Avoids prefix collision with eXist's built-in request module
(http://exist-db.org/xquery/request). Both modules can now be used
simultaneously without prefix conflicts:

  import module namespace request = "http://exist-db.org/xquery/request";
  import module namespace exrequest = "http://exquery.org/ns/request";

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

Author: joewiz

pom.xml

@@ -46,7 +46,7 @@
 
         <!-- used in the EXPath Package Descriptor -->
         <package-name>http://exist-db.org/apps/request</package-name>
-        <package-abbrev>request</package-abbrev>
+        <package-abbrev>exist-request</package-abbrev>
 
         <request.module.namespace>http://exquery.org/ns/request</request.module.namespace>
         <request.module.java.classname>org.exist.xquery.modules.request.RequestModule</request.module.java.classname>

src/main/java/org/exist/xquery/modules/request/RequestModule.java

@@ -46,7 +46,7 @@ public class RequestModule extends AbstractInternalModule {
 
     public static final String NAMESPACE_URI = "http://exquery.org/ns/request";
 
-    public static final String PREFIX = "request";
+    public static final String PREFIX = "exrequest";
 
     public static final String RELEASE = "1.0.0";