add setup.py

.gitignore

-*.fits
-*.cat
-*.log
-*.list
+build/*
+*.egg
+*.egg-info/*
 *.png
 *.pyc
 *.so
\ No newline at end of file
-*.out
-*pnodes
-*-checkpoint.ipynb
\ No newline at end of file

requirements.txt

+numpy==1.26.4
+astropy==6.0.1
+scipy==1.11.4
+GalSim==2.5.2
+PyYAML==6.0.1
+sep==1.2.1
+healpy==1.16.6
+h5py==3.11.0
+Cython==3.0.6
+numba==0.59.1
+psutil==5.9.8
+toml==0.10.2
+lmfit==1.2.2
\ No newline at end of file

setup.py

+from setuptools import setup, find_packages
+
+with open("requirements.txt", "r") as f:
+    requirements = [
+        req.strip()
+        for req in f.readlines()
+        if not req.startswith("#") and req.__contains__("==")
+    ]
+
+setup(name='csst_source_injection',
+      version='1.0.0',
+      packages=find_packages(),
+      package_data={
+        'injection_pipeline.Catalog.data': ["*.fits"],
+      },
+      python_requires=">=3.11",
+      install_requires=requirements,
+)
\ No newline at end of file