branding: Paper -> Delta (group, version, jar/manifest, fill project id)

paper-server/build.gradle.kts

@@ -200,14 +200,14 @@ tasks.jar {
         val gitBranch = git.exec(providers, "rev-parse", "--abbrev-ref", "HEAD").get().trim()
         attributes(
             "Main-Class" to "org.bukkit.craftbukkit.Main",
-            "Implementation-Title" to "Paper",
+            "Implementation-Title" to "Delta",
             "Implementation-Version" to implementationVersion,
             "Implementation-Vendor" to date,
-            "Specification-Title" to "Paper",
+            "Specification-Title" to "Delta",
             "Specification-Version" to project.version,
-            "Specification-Vendor" to "Paper Team",
-            "Brand-Id" to "papermc:paper",
-            "Brand-Name" to "Paper",
+            "Specification-Vendor" to "ZernMC",
+            "Brand-Id" to "zern:delta",
+            "Brand-Name" to "Delta",
             "Build-Number" to (build ?: ""),
             "Build-Time" to buildTime.toString(),
             "Git-Branch" to gitBranch,
@@ -371,7 +371,7 @@ tasks.registerRunTask("runReobfPaperclip") {
 }
 
 fill {
-    project("paper")
+    project("delta")
     versionFamily(paperweight.minecraftVersion.map { it.split(".", "-").takeWhile { part -> part.toIntOrNull() != null }.take(2).joinToString(".") })
     version(paperweight.minecraftVersion)