Solve housekeeping issue and add 5 watchfaces

[eLtMosen]

Solve positions from this housekeeping issue
#44

• Sort all WF alphabetically
• Update thumbnails
• Change paths to watchface-img in all WF with images
• Swap all asteroid_logo.png for asteroid-logo.svg
• Resize all svg to 800x800px due to recent discovery that svgs do not scale up properly Also this should add some future proofness for possible higher resolution watches to be supported.

Add 6 watchfaces

• analog-nort
• digital-shifted
• analog-aviator
• analog-words-80s
• digital-numeral-unity
• analog-scientific-v2

[jrtberlin]

I think this is a huge improvement.

But please split housekeeping and watchface additions into separate PRs next time.
This way, reviewers can:

1. focus on one thing in the PR (adding a watchface vs. housekeeping). Maybe someone doesn't feel confident reviewing parts of the PR because the part is outside the field of expertise.
2. it makes the PR smaller. People are more likely to take the time to review a small PR than something they have to dedicate a large amount of time to.