Fix #2: Missing Plugin-Mainversion

Signed-off-by: Taylor Smock <smocktaylor@gmail.com>

Author: tsmock

build.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<project name="mapwithai" default="dist" basedir=".">
+<project name="panoramax" default="dist" basedir=".">
   <property name="plugin.src.dir" value="src/main/java"/>
   <property name="plugin.test.dir" value="src/test/java"/>
   <property name="plugin.resources.dir" value="src/main/resources"/>
@@ -8,6 +8,7 @@
   <property file="${basedir}/gradle.properties"/>
   <property name="java.lang.version" value="21"/>
   <property name="plugin.minimum.java.version" value="21"/>
+  <property name="plugin.main.version" value="19387"/>
 
   <!-- ** include targets that all plugins have in common ** -->
   <import file="../build-common.xml"/>

pom.xml

@@ -17,6 +17,7 @@
     <plugin.src.dir>${project.basedir}/src/main/java</plugin.src.dir>
     <plugin.test.dir>${project.basedir}/src/test/java</plugin.test.dir>
     <plugin.class>org.openstreetmap.josm.plugins.panoramax.PanoramaxPlugin</plugin.class>
+    <plugin.main.version>19387</plugin.main.version>
   </properties>
   <build>
     <plugins>