Use pip freeze

[bcwu]

Description

fixes #297

[kgartland-rstudio]

dash

• with requirements.txt
• without requirements.txt

api

• with requirements.txt
• without requirements.txt

fastapi

• with requirements.txt
• without requirements.txt

bokeh

• with requirements.txt
• without requirements.txt

streamlit

• with requirements.txt
• without requirements.txt

shiny

• with requirements.txt
• without requirements.txt

jupyter notebook

• with requirements.txt
• without requirements.txt

jupyter notebooks plugin deploy

• with requirements.txt
• without requirements.txt
• force generate requirements.txt

Extras

• deploy content from outside the directory w/ and w/out a requirements.txt
• write-manifest creates requirements.txt file from pip freeze + deployed
• deploy manifest w/ and w/out requirements.txt
• deploy any w/ and w/out requirements.txt on Windows