Add Parchment mappings

mod/build.gradle

@@ -19,7 +19,10 @@ subprojects {
 
 	dependencies {
 		minecraft "com.mojang:minecraft:${rootProject.minecraft_version}"
-		mappings loom.officialMojangMappings()
+		mappings loom.layered() {
+			officialMojangMappings()
+			parchment("org.parchmentmc.data:parchment-${project.minecraft_version}:${project.parchment_version}@zip")
+		}
 	}
 }
 
@@ -33,11 +36,10 @@ allprojects {
 	group = rootProject.maven_group
 
 	repositories {
-		// Add repositories to retrieve artifacts from in here.
-		// You should only use this when depending on other mods because
-		// Loom adds the essential maven repositories to download Minecraft and libraries from automatically.
-		// See https://docs.gradle.org/current/userguide/declaring_repositories.html
-		// for more information about repositories.
+		maven {
+			name "ParchmentMC"
+			url "https://maven.parchmentmc.org"
+		}
 		maven {
 			url "https://api.modrinth.com/maven"
 			content {

mod/gradle.properties

@@ -12,6 +12,8 @@ mod_source_url=https://github.com/CivPlatform/map-sync
 mod_issues_url=https://github.com/CivPlatform/map-sync/issues
 
 minecraft_version=1.18.2
+# https://parchmentmc.org/docs/getting-started
+parchment_version=2022.11.06
 enabled_platforms=fabric,forge
 
 # https://fabricmc.net/versions.html