retry to fix contextvars in tests

improve global transaction for tests. But there is still a bug related to contextvars not being propagated from fixture to test

eliminated unnecessary verifications for confirmations

simplifies middleware test a little

fix misspelled working-directory in CI config

fix indentation in CI config

fix python version in GitHub CI config

GitHub Actions CI for both project and template

fix python version number im pyproject.toml

remove empty lines in templates

removing testing related code from resources.py

Improve database transaction wrapper middleware

upgrade poetry installation in Dockerfile

enable CORS to everyone "*". Change that later to allow this only for dev/testing

closes #10 | Middleware for DB Transaction