Feature/refactor code to typescript

[ResuBaka]

Related issues

closes #22

Short description and why it's useful

• graphql example type annotation
• resolvers are loaded as typescript or javascript file
• added db and config to graphql context
• DbContext and initializeDb has now better annotation
• Fixed dist output
  • compiles scripts now too
  • the folder structure has changed a bit in the dist folder -> pm2 config was updated for it
• Added logger
  • Missing for it is documentation how to add you own instance to it, so you can use any logger you need
• Updated example module a but with the new types

Screenshots of visual changes before/after (if there are any)

IMPORTANT NOTICE - Remember to update CHANGELOG.md with a description of your change

Contribution and currently important rules acceptance

• [x] I read and followed contribution rules

[ResuBaka]

I still want to change more code to typescript and add better type hinting.

But when you guys want this in the source code asap I can move it to Ready for review.

[pkarw]

@ResuBaka take your time, that's perfect

[ResuBaka]

It is now ready to review and we should have one that makes a QA on it so we still now that all works like we expect.

We need a followup for the logger class that we add the missing documentation and @pkarw can you look if it is usable or if there are missing helper/functions for it?