chore(config-compiler-plugin): clean up a bit

libjf-config-compiler-plugin-v2/src/main/java/io/gitlab/jfronny/libjf/config/plugin/Cl.java

@@ -3,7 +3,6 @@ package io.gitlab.jfronny.libjf.config.plugin;
 import com.squareup.javapoet.ClassName;
 
 public class Cl {
-
     public static final ClassName MANIFOLD_EXTENSION = ClassName.get("manifold.ext.rt.api", "Extension");
     public static final ClassName MANIFOLD_THIS = ClassName.get("manifold.ext.rt.api", "This");
 }

libjf-config-compiler-plugin-v2/src/main/java/io/gitlab/jfronny/libjf/config/plugin/ConfigClass.java

@@ -15,8 +15,8 @@ public record ConfigClass(
 ) {
     public static ConfigClass of(TypeElement element, String[] referencedConfigs, TypeName tweakerName, boolean hasManifold) {
         ClassName className = ClassName.get(element);
-        String pkg = hasManifold ? "gsoncompile.extensions." + className.packageName() + "." + className.simpleNames().get(0) : className.packageName();
-        ClassName generatedClassName = ClassName.get(pkg, "JFC_" + className.simpleNames().get(0), className.simpleNames().subList(1, className.simpleNames().size()).toArray(String[]::new));
+        String pkg = hasManifold ? "gsoncompile.extensions." + className.packageName() + "." + className.simpleNames().getFirst() : className.packageName();
+        ClassName generatedClassName = ClassName.get(pkg, "JFC_" + className.simpleNames().getFirst(), className.simpleNames().subList(1, className.simpleNames().size()).toArray(String[]::new));
         return new ConfigClass(element, ClassName.get(element), TypeName.get(element.asType()), generatedClassName, referencedConfigs, tweakerName);
     }
 

libjf-config-core-v2/src/main/java/io/gitlab/jfronny/libjf/config/api/v2/dsl/Migration.java

@@ -2,9 +2,7 @@ package io.gitlab.jfronny.libjf.config.api.v2.dsl;
 
 import io.gitlab.jfronny.commons.serialize.SerializeReader;
 
-import java.io.IOException;
-
 @FunctionalInterface
 public interface Migration {
-    <TEx extends Exception, Reader extends SerializeReader<TEx, Reader>> void apply(Reader reader) throws IOException;
+    <TEx extends Exception, Reader extends SerializeReader<TEx, Reader>> void apply(Reader reader) throws TEx;
 }