feat(pproc): 实现C语言预处理器功能并重构项目依赖

- 新增预处理器库(pproc)，替代原有的pprocessor模块
- 实现完整的宏定义解析功能，支持对象宏和函数宏
- 添加条件编译指令处理(#if、#ifdef、#ifndef、#else、#elif、#endif)
- 实现宏展开机制，包括嵌套宏和递归宏处理
- 添加宏定义测试用例，覆盖基本功能和复杂场景
- 在cbuild.toml中更新依赖配置，移除parser、ast、ast2ir、ir等未完成模块
- 新增lexer工具函数用于token流处理
- 添加宏定义表管理功能，支持宏的创建、查找、删除操作
- 实现宏参数解析和替换列表处理

cbuild.toml

@@ -4,10 +4,10 @@ version = "0.1.0"
 
 dependencies = [
     { name = "argparse", path = "./libs/argparse" },
-    { name = "pprocessor", path = "./libs/pprocessor" },
     { name = "lexer", path = "./libs/lexer" },
-    { name = "parser", path = "./libs/parser" },
-    { name = "ast", path = "./libs/ast" },
-    { name = "ast2ir", path = "./libs/ast2ir" },
-    { name = "ir", path = "./libs/ir" },
+    { name = "pproc", path = "./libs/pproc" },
+    #     { name = "parser", path = "./libs/parser" },
+    #     { name = "ast", path = "./libs/ast" },
+    #     { name = "ast2ir", path = "./libs/ast2ir" },
+    #     { name = "ir", path = "./libs/ir" },
 ]