Related #55 #56

Describe the changes you have made in this PR -

• Make it generic, just by changing SETUP_COMMAND and START_COMMAND make it compatible for different python frameworks
• OS package installation support added
• Added support for running separate commands if the user wants

Tested on

• Flask Pip -> https://github.com/tanmoysrt/geenie
• Flask Pipenv -> https://github.com/tanmoysrt/geenie
• Flask Poetry -> https://github.com/NarayanAdithya/Flask-Poetry
• Django Pip -> https://github.com/tanmoysrt/django_blog/tree/master/blog
• Django Pipenv -> https://github.com/tanmoysrt/django_blog/tree/master/blog
• Django Poetry -> https://github.com/tanmoysrt/django_blog/tree/master/blog
• Streamlit Pip -> https://github.com/patrickloeber/streamlit-demo
• Streamlit Pipenv -> https://github.com/patrickloeber/streamlit-demo
• Streamlit Poetry -> https://github.com/patrickloeber/streamlit-demo
• Fastapi Pip -> https://github.com/sumanentc/python-sample-FastAPI-application
• Fastapi Pipenv -> https://github.com/sumanentc/python-sample-FastAPI-application
• Fastapi Poetry -> https://github.com/sumanentc/python-sample-FastAPI-application

Note: Please check Allow edits from maintainers. before creating the PR.