add files for pip installation

MANIFEST.in

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+include socnavgym/envs/utils/sngnnv2/example_model/*.prms
+include socnavgym/envs/utils/sngnnv2/example_model/*.tch

pyproject.toml

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+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"

setup.py

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+import os
+import sys
+from setuptools import find_packages, setup
+
+
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), "socnavgym"))
+
+NAME = "socnavgym"
+DESCRIPTION = "An environment for Social Navigation"
+REPOSITORY = "https://github.com/gnns4hri/SocNavGym"
+EMAIL = "[email protected]"
+AUTHOR = "Sushant Swamy"
+VERSION = "0.0.3"
+
+with open("README.md", "r") as f:
+    LONG_DESCRIPTION = f.read()
+
+REQUIRED = [
+    "gym >= 0.26.2",
+    "opencv-python",
+    "numpy",
+    "matplotlib",
+    "torch >= 1.12.1",
+    "shapely",
+    "dgl"
+]
+EXCLUDES=["environment_configs"]
+
+setup(
+    name=NAME,
+    version=VERSION,
+    description=DESCRIPTION,
+    author=AUTHOR,
+    author_email=EMAIL,
+    url=REPOSITORY,
+    long_description=LONG_DESCRIPTION,
+    long_description_content_type='text/markdown',
+    packages=find_packages(exclude=EXCLUDES),
+    install_requires=REQUIRED,
+    license="GPL-3",
+    include_package_data=True
+)