refactor: move package "internal" to "debug" and improve logging throughout the codebase

gropify-gradle-plugin/src/main/kotlin/com/highcapable/gropify/debug/Logger.kt

@@ -0,0 +1,52 @@
+/*
+ * Gropify - A type-safe and modern properties plugin for Gradle.
+ * Copyright (C) 2019 HighCapable
+ * https://github.com/HighCapable/Gropify
+ *
+ * Apache License Version 2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * This file is created by fankes on 2025/10/16.
+ */
+@file:Suppress("unused", "LoggingStringTemplateAsArgument")
+
+package com.highcapable.gropify.debug
+
+import com.highcapable.gropify.plugin.Gropify
+
+/**
+ * Gropify logger.
+ */
+internal object Logger {
+
+    /** Debug mode flag. */
+    var debugMode = false
+
+    fun debug(msg: Any) {
+        if (!debugMode) return
+        println("\u001B[36m[${Gropify.TAG}][DEBUG] $msg\u001B[0m")
+    }
+
+    fun info(msg: Any) {
+        println("${Gropify.TAG}][INFO] $msg")
+    }
+
+    fun warn(msg: Any) {
+        println("\u001B[33m[${Gropify.TAG}][WARN] $msg\u001B[0m")
+    }
+
+    fun error(msg: Any) {
+        println("\u001B[31m[${Gropify.TAG}][ERROR] $msg\u001B[0m")
+    }
+}