prepare hardfork build system

purpur-server/build.gradle.kts.patch

@@ -0,0 +1,53 @@
+--- a/paper-server/build.gradle.kts
++++ b/paper-server/build.gradle.kts
+@@ -20,8 +_,19 @@
+     // macheOldPath = file("F:\\Projects\\PaperTooling\\mache\\versions\\1.21.4\\src\\main\\java")
+     // gitFilePatches = true
+ 
++    val purpur = forks.register("purpur") {
++        upstream.patchDir("paperServer") {
++            upstreamPath = "paper-server"
++            excludes = setOf("src/minecraft", "patches", "build.gradle.kts")
++            patchesDir = rootDirectory.dir("purpur-server/paper-patches")
++            outputDir = rootDirectory.dir("paper-server")
++        }
++    }
++
++    activeFork = purpur
++
+     paper {
+-        reobfMappingsPatch = layout.projectDirectory.file("../build-data/reobf-mappings-patch.tiny")
++        paperServerDir = upstreamsDirectory().map { it.dir("paper/paper-server") }
+     }
+ 
+     spigot {
+@@ -104,7 +_,19 @@
+     }
+ }
+ 
+-val log4jPlugins = sourceSets.create("log4jPlugins")
++sourceSets {
++    main {
++        java { srcDir("../paper-server/src/main/java") }
++        resources { srcDir("../paper-server/src/main/resources") }
++    }
++    test {
++        java { srcDir("../paper-server/src/test/java") }
++        resources { srcDir("../paper-server/src/test/resources") }
++    }
++}
++val log4jPlugins = sourceSets.create("log4jPlugins") {
++    java { srcDir("../paper-server/src/log4jPlugins/java") }
++}
+ configurations.named(log4jPlugins.compileClasspathConfigurationName) {
+     extendsFrom(configurations.compileClasspath.get())
+ }
+@@ -123,7 +_,7 @@
+ // Paper end - configure mockito agent that is needed in newer java versions
+ 
+ dependencies {
+-    implementation(project(":paper-api"))
++    implementation(project(":purpur-api"))
+     implementation("ca.spottedleaf:concurrentutil:0.0.2") // Paper - Add ConcurrentUtil dependency
+     // Paper start
+     implementation("org.jline:jline-terminal-ffm:3.27.1") // use ffm on java 22+