Refactor gguf scripts to improve metadata handling (#11909)

* Refactor gguf scripts to improve metadata handling

Added contents method to ReaderField class
Added endianess property to GGUFReader class

* update scripts

* fix import

* remove unused import

* attempt to work around flake and pyright errors

* second attempt

* give up, ignore type

* bump version

* apply newbyteorder fixes

gguf-py/examples/reader.py

@@ -2,12 +2,14 @@
 import logging
 import sys
 from pathlib import Path
-from gguf.gguf_reader import GGUFReader
 
 logger = logging.getLogger("reader")
 
+# Necessary to load the local gguf package
 sys.path.insert(0, str(Path(__file__).parent.parent))
 
+from gguf.gguf_reader import GGUFReader
+
 
 def read_gguf_file(gguf_file_path):
     """