Fix dependencies and include GitHub action

[lazarofl]

Dependency installation step was failing due to a conflict between urllib and botocore.

This PR aims to:

• fix dependency conflict by downgrading urllib
• include psycopg2-binary and nltk
• add github action to avoid integrating broken code into master

Evidence of failure

docker-compose build web

#10 110.1 ERROR: Cannot install -r requirements.txt (line 4) and urllib3==1.26.5 because these package versions have conflicting dependencies.
#10 110.1
#10 110.1 The conflict is caused by:
#10 110.1     The user requested urllib3==1.26.5
#10 110.1     botocore 1.12.45 depends on urllib3<1.25 and >=1.20; python_version >= "3.4"

Reference PR

https://github.com/lazarofl/moviegeek/pull/2 action checks: https://github.com/lazarofl/moviegeek/pull/2/checks