Layout/Scripts Refactoring

[f1shy-dev]

So this PR adds some refactors to the general project:

• add completely new scripts
  • yarn dev runs webpack, electron and electron main process tsc compiler in parallel
  • yarn build builds for both platforms
  • yarn build:electron:<mac|windows> builds for the relative platform
  • yarn start builds the prod
• rename some confusing/misleading folders (e.g renderer -> game, main -> electron)
• move cross-env extra length in scripts to .env
• add env loading to webpack and electron
• move icons and default pack into assets folder for clarity
• some (accidental) file formatting from my editor's on-save prettier
• some automatic fixes from npm audit fix

[blaumeise20]

Thanks for your work! You are the first contributor to Jell Machine!

[NKY5223]

👍