[Build] QOL for build scripts

imgui-binding/build.gradle

@@ -18,17 +18,8 @@ test {
     useJUnitPlatform()
 }
 
-assemble.dependsOn clean
-task generateLibs(type: GenerateLibs, dependsOn: assemble)
-
-task sourcesJar(type: Jar, dependsOn: classes) {
-    archiveClassifier.set('sources')
-    from sourceSets.main.allSource
-}
-
-task javadocJar(type: Jar, dependsOn: javadoc) {
-    archiveClassifier.set('javadoc')
-    from javadoc.destinationDir
+tasks.register('generateLibs', GenerateLibs) {
+    it.dependsOn assemble
 }
 
 apply from: "$rootDir/publish.gradle"