Allow overriding the published parent pom's name and description (#795)

The publishing-helper in Polaris derives the name and description used in the parent POM from ASF's published project information. If an Apache projects wants to publish the parent pom for a _related_ project, the name and description in the pom (may) need to be different (as for #785). This change allows this.

Author: snazy

build-logic/src/main/kotlin/publishing/PublishingHelperExtension.kt

@@ -37,6 +37,8 @@ abstract class PublishingHelperExtension
 constructor(objectFactory: ObjectFactory, project: Project) {
   // the following are only relevant on the root project
   val asfProjectName = objectFactory.property<String>().convention(project.name)
+  val overrideName = objectFactory.property<String>()
+  val overrideDescription = objectFactory.property<String>()
   val baseName =
     objectFactory
       .property<String>()

build-logic/src/main/kotlin/publishing/configurePom.kt

@@ -107,8 +107,8 @@ internal fun configurePom(project: Project, mavenPublication: MavenPublication,
             }
             issueManagement { url.set(projectPeople.bugDatabase) }
 
-            name.set(projectPeople.name)
-            description.set(projectPeople.description)
+            name.set(e.overrideName.orElse(projectPeople.name))
+            description.set(e.overrideDescription.orElse(projectPeople.description))
             url.set(projectPeople.website)
             inceptionYear.set(projectPeople.inceptionYear.toString())