refactor(buildSrc): Configure publication of plugins via conventions

This nicely deduplicates the publishing code for plugin platforms in
favor of the more complete configuration in the publication conventions.

Signed-off-by: Sebastian Schuberth <[email protected]>

buildSrc/src/main/kotlin/ort-plugins-conventions.gradle.kts

@@ -24,6 +24,7 @@ plugins {
 
     // Apply precompiled plugins.
     id("ort-base-conventions")
+    id("ort-publication-conventions")
 }
 
 javaPlatform {
@@ -41,29 +42,3 @@ dependencies {
         api(it)
     }
 }
-
-configure<PublishingExtension> {
-    publications {
-        create<MavenPublication>(name) {
-            groupId = "org.ossreviewtoolkit.plugins"
-
-            from(components["javaPlatform"])
-
-            pom {
-                licenses {
-                    license {
-                        name = "Apache-2.0"
-                        url = "https://www.apache.org/licenses/LICENSE-2.0"
-                    }
-                }
-
-                scm {
-                    connection = "scm:git:https://github.com/oss-review-toolkit/ort.git"
-                    developerConnection = "scm:git:[email protected]:oss-review-toolkit/ort.git"
-                    tag = version.toString()
-                    url = "https://github.com/oss-review-toolkit/ort"
-                }
-            }
-        }
-    }
-}

buildSrc/src/main/kotlin/ort-publication-conventions.gradle.kts

@@ -35,9 +35,8 @@ configure<PublishingExtension> {
 
             groupId = "org${getGroupId(parent)}"
 
-            from(components["java"])
-            artifact(tasks["sourcesJar"])
-            artifact(tasks["docsJavadocJar"])
+            listOf("java", "javaPlatform").mapNotNull { components.findByName(it) }.forEach(::from)
+            listOf("sourcesJar", "docsJavadocJar").mapNotNull { tasks.findByName(it) }.forEach(::artifact)
 
             pom {
                 name = project.name