feat: add SCF format library and rename components to SCC prefix

- Introduce new SCF (SCC Format) library with header, implementation, and test files
- SCF is a minimal executable/linkable format focused on internal linking with external symbol import/export abstraction
- Rename lexer and lex_parser packages from 'smcc_' to 'scc_' prefix for consistency
- Update hashmap implementation to use 'scc_' prefix for types and structures
- Add build configuration for new format library with dependencies on libcore and libutils

runtime/libutils/include/strpool.h

@@ -18,14 +18,14 @@
  * 组合哈希表和专用内存分配器实现的高效字符串存储池
  */
 typedef struct strpool {
-    hashmap_t ht; /**< 哈希表用于快速查找已存储字符串 */
-} strpool_t;
+    scc_hashtable_t ht; /**< 哈希表用于快速查找已存储字符串 */
+} scc_strpool_t;
 
 /**
  * @brief 初始化字符串池
  * @param pool 字符串池实例指针
  */
-void init_strpool(strpool_t *pool);
+void scc_strpool_init(scc_strpool_t *pool);
 
 /**
  * @brief 驻留字符串到池中
@@ -36,7 +36,7 @@ void init_strpool(strpool_t *pool);
  * @note 返回值生命周期与字符串池一致
  * @note 重复插入相同字符串会返回已有指针
  */
-const char *strpool_intern(strpool_t *pool, const char *str);
+const char *scc_strpool_intern(scc_strpool_t *pool, const char *str);
 
 /**
  * @brief 销毁字符串池
@@ -45,6 +45,25 @@ const char *strpool_intern(strpool_t *pool, const char *str);
  * @warning 销毁后已获取的字符串指针将失效
  * @note 会自动释放所有驻留字符串内存
  */
-void strpool_destroy(strpool_t *pool);
+void scc_strpool_drop(scc_strpool_t *pool);
+
+/**
+ * @typedef scc_hashtable_iter_fn
+ * @brief 哈希表迭代回调函数类型
+ * @param key 当前键指针
+ * @param value 当前值指针
+ * @param context 用户上下文指针
+ * @return 返回非0停止迭代
+ */
+typedef int (*scc_strpool_iter_fn)(const char *key, char *value, void *context);
+
+/**
+ * @brief 遍历字符串表所有有效条目
+ * @param ht 字符串表实例指针
+ * @param iter_func 迭代回调函数
+ * @param context 用户上下文指针
+ */
+void scc_strpool_foreach(scc_strpool_t *pool, scc_strpool_iter_fn iter_func,
+                         void *context);
 
 #endif /* __SCC_STRPOOL_H__ */