add Symbol class header

src/symbol.hpp

@@ -0,0 +1,18 @@
+#ifndef GWATCH_SYMBOL_HPP
+#define GWATCH_SYMBOL_HPP
+
+#include <cstdint>
+#include <libdwarf.h>
+#include <memory>
+#include <string>
+
+template <typename T> using ptr = std::unique_ptr<T>;
+
+class Symbol {
+public:
+  bool is_integer_type(Dwarf_Debug dbg, Dwarf_Die die);
+  Dwarf_Addr get_global_var_addr(Dwarf_Debug dbg, Dwarf_Die die);
+  void list_global_integer_vars(Dwarf_Debug dbg);
+};
+
+#endif