feat: load package configuration file and upload it with enterprisePackage target

Ref: MISC-446

Author: Obero

src/main/java/io/gatling/mojo/EnterpriseUploadMojo.java

@@ -17,6 +17,8 @@
 package io.gatling.mojo;
 
 import io.gatling.plugin.BatchEnterprisePlugin;
+import io.gatling.plugin.configuration.PackageConfiguration;
+import io.gatling.plugin.exceptions.EnterprisePluginException;
 import java.io.File;
 import java.util.UUID;
 import org.apache.maven.plugin.MojoFailureException;
@@ -51,6 +53,20 @@ public final class EnterpriseUploadMojo extends AbstractEnterprisePluginMojo {
 
   @Override
   public void execute() throws MojoFailureException {
+    final BatchEnterprisePlugin enterprisePlugin = initBatchEnterprisePlugin();
+
+    final String jsonConfig = PackageConfiguration.loadToJson(mavenProject.getBasedir());
+
+    if (jsonConfig != null) {
+      try {
+        getLog().info("Package configuration file detected, applying it.");
+        packageId = enterprisePlugin.uploadPackageConfiguration(jsonConfig).toString();
+        getLog().info("Package id: " + packageId);
+      } catch (EnterprisePluginException e) {
+        throw new MojoFailureException("Failed to upload package configuration", e);
+      }
+    }
+
     if (packageId == null && simulationId == null) {
       final String msg =
           "Missing packageID\n"
@@ -62,7 +78,6 @@ public void execute() throws MojoFailureException {
     }
 
     final File file = enterprisePackage();
-    final BatchEnterprisePlugin enterprisePlugin = initBatchEnterprisePlugin();
 
     RecoverEnterprisePluginException.handle(
         () ->