Package `bytelatent` as a module (#7)

* make installable via pip

* fix missing xformers deps

* remove non-core dependencies

* fix linting

* fix isort

setup.py

@@ -0,0 +1,11 @@
+from setuptools import find_packages, setup
+
+setup(
+    name="bytelatent",
+    version="0.1.0",
+    description="Byte Latent Transformer: Patches Scale Better Than Tokens",
+    author="Meta Platforms, Inc. and affiliates.",
+    url="https://github.com/facebookresearch/blt",
+    packages=find_packages(),
+    install_requires=["sentencepiece", "tiktoken", "xformers"],
+)