Add javadoc to plugin-api

Configure plugin-api build to publish to Maven Central

plugin-api/build.gradle.kts

@@ -1,23 +1,49 @@
+import com.vanniktech.maven.publish.SonatypeHost
+
 plugins {
     kotlin("jvm")
-    `maven-publish`
+    `java-library`
+    id("com.vanniktech.maven.publish") version "0.32.0"
 }
 
 group = "org.gameyfin"
 
-repositories {
-    mavenCentral()
-}
-
-publishing {
-    publications {
-        create<MavenPublication>("maven") {
-            from(components["java"])
-        }
-    }
-}
-
 dependencies {
     // PF4J (shared)
     api("org.pf4j:pf4j:${rootProject.extra["pf4jVersion"]}")
+}
+
+mavenPublishing {
+    publishToMavenCentral(SonatypeHost.CENTRAL_PORTAL)
+    signAllPublications()
+
+    coordinates(project.group.toString(), project.name, project.version.toString())
+
+    pom {
+        name = "Gameyfin Plugin API"
+        description =
+            "The Gameyfin Plugin API provides the necessary interfaces and classes to create plugins for Gameyfin."
+        url = "https://gameyfin.org/"
+
+        licenses {
+            license {
+                name = "GNU  Affero General Public License v3.0"
+                url = "https://www.gnu.org/licenses/agpl-3.0.en.html"
+            }
+        }
+
+        developers {
+            developer {
+                id = "grimsi"
+                name = "Simon Grimme"
+                url = "https://github.com/grimsi"
+            }
+        }
+
+        scm {
+            url = "https://github.com/gameyfin/gameyfin"
+            connection = "scm:git:git://github.com/gameyfin/gameyfin.git"
+            developerConnection = "scm:git:ssh://git@github.com/gameyfin/gameyfin.git"
+        }
+    }
 }