Dockerize celery worker

[esloch]

• Resolves #43
• Dockerize celery and crontab.
• Tasks crawlclima passed into container.
• Configured pre-commit to push.
• Created Makefile, license and setup.cfg.
• Configured CI github actions.

[esloch]

Agradecido @fccoelho! Podes fazer o merge dete PR?; Não estou como contribuidor do Repo.