gguf-py: moved scripts directory

[VJHack]

When installing the gguf pypi package, only one root level package should be registered. Currently two seprate packages get registered (scripts and gguf) which can cause issues when your project already has a scripts folder.

This PR moves the scripts directory inside the gguf package, making it a subpackage of gguf.

gguf-py
├── LICENSE
├── README.md
├── examples
│   ├── reader.py
│   └── writer.py
├── gguf
│   ├── __init__.py
│   ├── constants.py
│   ├── gguf.py
│   ├── gguf_reader.py
│   ├── gguf_writer.py
│   ├── lazy.py
│   ├── metadata.py
│   ├── py.typed
│   ├── quants.py
│   ├── scripts
│   │   ├── __init__.py
│   │   ├── gguf_convert_endian.py
│   │   ├── gguf_dump.py
│   │   ├── gguf_hash.py
│   │   ├── gguf_new_metadata.py
│   │   └── gguf_set_metadata.py
│   ├── tensor_mapping.py
│   ├── utility.py
│   └── vocab.py
├── poetry.lock
├── pyproject.toml
└── tests
    ├── __init__.py
    ├── test_metadata.py
    └── test_quants.py

Fixes #11089 and Fixes #9566

[VJHack]

@ggerganov Pyright checks are failing in all pipelines because safetensors released version 0.5.1 to PyPi with a bug a few hours ago. Waiting on this fix to get merged and published.

If there's too much delay, we can pin the package to 0.5.0.

[VJHack]

safetensor version 0.5.2 was just released. That fixed the issue.

[LostRuins]

I think this commit broke the local detection of gguf library for non-installed setups

For example

llama.cpp/gguf-py/gguf/scripts/gguf_dump.py

Lines 15 to 16 in 8a1d9c2

	if "NO_LOCAL_GGUF" not in os.environ and (Path(__file__).parent.parent.parent / 'gguf-py').exists():
	sys.path.insert(0, str(Path(__file__).parent.parent))

should be instead:

if "NO_LOCAL_GGUF" not in os.environ and (Path(__file__).parent.parent.parent.parent / 'gguf-py').exists():
    sys.path.insert(0, str(Path(__file__).parent.parent.parent))

This will need to be changed in 7 other files.

[VJHack]

@LostRuins I'm seeing several places where this needs to be updated. Will push the fix as soon as possible. Thanks for pointing that out!