[build] project structure and publishing improvements

minecraft/tweed5-bundle/build.gradle.kts

@@ -1,9 +1,16 @@
 plugins {
-	`maven-publish`
-	id("de.siphalor.tweed5.base-module")
+	id("de.siphalor.tweed5.publishing")
 	id("de.siphalor.tweed5.minecraft.mod.dummy")
 }
 
+val bundledSourcesConfiguration = configurations.resolvable("bundledSources") {
+	extendsFrom(configurations.implementation.get())
+	isTransitive = true
+	attributes {
+		attribute(DocsType.DOCS_TYPE_ATTRIBUTE, objects.named(DocsType.SOURCES))
+	}
+}
+
 dependencies {
 	implementation(project(":tweed5-core"))
 	implementation(project(":tweed5-attributes-extension"))
@@ -18,3 +25,13 @@ dependencies {
 tasks.shadowJar {
 	relocate("org.objectweb.asm", "de.siphalor.tweed5.shadowed.org.objectweb.asm")
 }
+
+tasks.register<Jar>("sourcesJar") {
+	inputs.files(bundledSourcesConfiguration)
+	from(
+		bundledSourcesConfiguration.get().resolve()
+			.filter { it.name.startsWith(rootProject.name) }
+			.map { zipTree(it) }
+	)
+	archiveClassifier.set("sources")
+}