feat: Implement HEIC/HEIF parsing and rebuilding utilities

- Add `heic_types.py` to define structures for HEIC/HEIF boxes including ItemLocationBox, ItemInfoEntryBox, and others.
- Introduce parsing logic in `parser.py` to handle various box types and their contents, including nested structures.
- Implement rebuilding functionality for ItemLocationBox to adjust offsets based on new metadata.
- Enhance ItemInfoBox to correctly parse and build content for ItemInfoEntry.
- Update `pyproject.toml` to include project metadata and dependencies.

inspect_heic.py

@@ -1,9 +1,10 @@
 # pyheic_struct/inspect_heic.py
 
 import sys
-from heic_file import HEICFile
 import pprint # 用于漂亮地打印字典
 
+from pyheic_struct import HEICFile
+
 def inspect_file(filename: str):
     print(f"--- 正在侦察: {filename} ---")
     
@@ -107,4 +108,4 @@ if __name__ == "__main__":
         print("用法: python inspect_heic.py <文件名>")
         print("例如: python inspect_heic.py samsung.heic")
     else:
-        inspect_file(sys.argv[1])
+        inspect_file(sys.argv[1])