feat(i18n): add basic internationalization support

Author: chengpeiquan

src/i18n/messages/en.rs

@@ -0,0 +1,27 @@
+use phf::phf_map;
+
+pub static MESSAGES: phf::Map<&'static str, &'static str> = phf_map! {
+
+    // Configuration file I/O
+    "config_loaded" => "Configuration loaded successfully",
+    "config_not_found" => "Configuration file not found",
+    "failed_init_config" => "Failed to initialize configuration: {}",
+    "failed_print_config" => "Failed to print configuration: {}",
+    "config_file_not_found" => "Config file not found: {}",
+    "failed_parse_config" => "Failed to parse config: {}",
+    "global_config_not_initialized" => "Global configuration not initialized",
+
+    // Configuration file details
+    "config_details" => "---- Configuration Details -----",
+    "language" => "Language",
+    "authors" => "Authors",
+    "date_range" => "Date Range",
+    "repos" => "Repositories",
+    "includes" => "Includes",
+    "excludes" => "Excludes",
+    "format" => "Format",
+
+    // Keypress
+    "wait_for_key" => "Press any key to continue...",
+    "press_to_exit" => "Press any key to exit...",
+};

src/i18n/messages/zh.rs

@@ -0,0 +1,27 @@
+use phf::phf_map;
+
+pub static MESSAGES: phf::Map<&'static str, &'static str> = phf_map! {
+
+    // Configuration file I/O
+    "config_loaded" => "配置加载成功",
+    "config_not_found" => "未找到配置文件",
+    "failed_init_config" => "配置初始化失败：{}",
+    "failed_print_config" => "打印配置失败：{}",
+    "config_file_not_found" => "配置文件不存在：{}",
+    "failed_parse_config" => "解析配置失败：{}",
+    "global_config_not_initialized" => "全局配置未初始化",
+
+    // Configuration file details
+    "config_details" => "----------- 配置详情 -----------",
+    "language" => "语言",
+    "authors" => "作者",
+    "date_range" => "日期范围",
+    "repos" => "仓库",
+    "includes" => "包含",
+    "excludes" => "排除",
+    "format" => "格式",
+
+    // Keypress
+    "wait_for_key" => "按任意键继续...",
+    "press_to_exit" => "按任意键退出...",
+};

src/i18n/mod.rs

@@ -0,0 +1,16 @@
+mod messages {
+    pub mod en;
+    pub mod zh;
+}
+
+use crate::config;
+
+pub fn t<'a>(key: &'a str) -> &'a str {
+    let messages = if config::is_chinese() {
+        &messages::zh::MESSAGES
+    } else {
+        &messages::en::MESSAGES
+    };
+
+    messages.get(key).copied().unwrap_or(key)
+}