expose ploceus.layeredMappings to API

Author: SpaceWalkerRS

src/main/java/net/ornithemc/ploceus/PloceusGradleExtension.java

@@ -262,7 +262,8 @@ public Dependency mcpForgeMappings(String mc, String version) {
 		});
 	}
 
-	private Dependency layeredMappings(Action<LayeredMappingSpecBuilder> action) {
+	@Override
+	public Dependency layeredMappings(Action<LayeredMappingSpecBuilder> action) {
 		return loom.layered(builder -> {
 			action.execute(builder);
 			builder.addLayer(new NestsMappingSpec(this));

src/main/java/net/ornithemc/ploceus/api/PloceusGradleExtensionApi.java

@@ -1,7 +1,10 @@
 package net.ornithemc.ploceus.api;
 
+import org.gradle.api.Action;
 import org.gradle.api.artifacts.Dependency;
 
+import net.fabricmc.loom.api.mappings.layered.spec.LayeredMappingSpecBuilder;
+
 public interface PloceusGradleExtensionApi {
 
 	Dependency featherMappings(String build);
@@ -14,6 +17,8 @@ public interface PloceusGradleExtensionApi {
 
 	Dependency mcpForgeMappings(String mc, String version);
 
+	Dependency layeredMappings(Action<LayeredMappingSpecBuilder> action);
+
 	Dependency raven(String build);
 
 	Dependency raven(String build, String side);