Add install requires to steup.py

setup.py

 from setuptools import setup, find_packages
 
+install_requires = [pandas, scipy, sympy, matplotlib, ipywidgets]
+
 setup(name='TZPGcalc',
       version=1.0,
       description='TZPG calculator for SCS',
@@ -8,5 +10,6 @@ setup(name='TZPGcalc',
       url='https://in.xfel.eu/gitlab/SCS/tzpgcalc',
       packages=find_packages('src'),
       package_dir={'': 'src'},
+      install_requires=install_requires,
       python_requires='>=3.8'
       )