Allow to open the site to public

• Adding inbox blacklist as an env variable, adding entry to env example

• Updating README with how to setup SES rules for dropping blacklisted emails

• Adding new error pages

• Adding GitHub Action to run automated tests

• Updating project dependencies

Updated project dependencies

• adding VSC workspace files to .gitignore

• minor and major dependency update

• adding missing @types and fixing a potential email address parsing bug

• cleaning up tests

Base version

Starting with a working project that could be used as a base for future development.